CN104635690B - Vehicle control unit of pure electric vehicle integrating gateway function - Google Patents
Vehicle control unit of pure electric vehicle integrating gateway function Download PDFInfo
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- CN104635690B CN104635690B CN201410850764.XA CN201410850764A CN104635690B CN 104635690 B CN104635690 B CN 104635690B CN 201410850764 A CN201410850764 A CN 201410850764A CN 104635690 B CN104635690 B CN 104635690B
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Abstract
The embodiment of the invention provides a vehicle control unit of a pure electric vehicle with an integrated gateway function, which mainly comprises: the system comprises a singlechip, a power supply chip and transceivers of various bus types; the transceiver is connected with the singlechip through a transceiving bus and is accessed to the bus with the type corresponding to the transceiver; the single chip microcomputer is connected with transceivers of various bus types through a plurality of transceiving buses and is connected with the power supply chip through the SPI bus; the power supply chip is connected with the single chip microcomputer through the SPI bus, provides power supply voltage for the whole vehicle controller, and receives various types of awakening signals input from the outside through the awakening signal input interface. The VCU is provided with a large number of peripheral bus chips and can be compatible with more bus types, thereby having greater network communication capacity and realizing the gateway function. Each wake-up input of a power chip in the VCU is provided with a detection signal, so that the VCU can start a corresponding working mode under various necessary working states.
Description
Technical field
The present invention relates to pure electric automobile technical field, more particularly to a kind of pure electric automobile of integrated gateway function
VCU (Vehicle Control Unit, entire car controller).
Background technology
Petroleum resources are exhausted and the serious dual-pressure of environmental pollution under, the high energy-conservation of pure electric automobile, low stain
Advantage, the Main way of contemporary automotive development is become, carrying out R and D to pure electric automobile key technology has
Very important meaning.
The vehicle network of pure electric automobile has the characteristics of species is more, node is more, content is miscellaneous, both can be with using a gateway
Vehicle network is combed, the signal quality of vehicle network can be improved to a certain extent again.And VCU is as pure electronic vapour
Car core control part with the various controllers on different bus network, it is necessary to carry out information exchange.Gateway is collected with VCU
Into being changed into two parts from a part, that is, save space, reduce cost again.
In pure electric automobile, the control unit of engine in VCU substitution orthodox cars, is to carry out pure electric vehicle power
Control and the carrier of electric energy management.On the one hand, VCU obtains operator demand's information, the opposing party by its data acquisition module
The part such as face VCU and electric machine controller, battery management system, electronic accessory system forms bus network, can in real time obtain and work as
The parameter of the parts such as preceding whole vehicle state, motor, battery, electronic auxiliary, Electri auxiliary parts and motor are coordinated using optimized algorithm
Operation, on the premise of meeting driver to the dynamic property and comfortableness demand of vehicle, the consumption of electric energy is saved to greatest extent.
There is part pure electric automobile in the market, according to requirement of each network node to real-time, devise high, low speed
Two speed different CAN (ControllerAreaNetwork, controller local area network) communication network.By requirement of real-time
Strict node composition high-speed CAN communication network, low speed CAN communication net is formed by the relatively low node of other requirement of real-time
Network, and arrange entire car controller that the different CAN communication network connection of the two speed is realized into the number between whole nodes
According to shared.
With the continuous development of pure electric automobile, vehicle network node is on the increase, and security performance requires to improve constantly, always
The type of line has been not limited to CAN, even CAN also not exclusively divides by speed, can also be related to pacifying
Entirely with the division of specialized network.At this moment, it is necessary to which a kind of VCU of integrated gateway function, the VCU need to have bigger network and led to
News ability, can compatible more bus types, there are more bus runs.And in order to match bigger communication data
Amount is, it is necessary to have enough data storages or cache module.Existing pure electric automobile VCU, its working condition are only restricted in a little
The 2-3 states such as fiery key unlatching, Vehicular charging, and if to be used as vehicle gateway to occur, VCU should not be just limited only within
These working conditions, other states are also required to start work, such as activation of alarm state, Remote Wake Up as the VCU of gateway
Multiple states such as working condition, stationary vehicle alert status.
The content of the invention
The embodiment provides a kind of VCU of the pure electric automobile of integrated gateway function, to realize that one kind has
The VCU of gateway function.
A kind of entire car controller of the pure electric automobile of integrated gateway function, including：Single-chip microcomputer, power supply chip, Duo Zhongzong
The transceiver of line type；
Described transceiver, for being connected by transceiver bus with the single-chip microcomputer, access the transceiver corresponding types
Bus；
Described single-chip microcomputer, for being connected respectively by a plurality of transceiver bus with the transceiver of various bus types, pass through
Serial peripheral equipment interface SPI bus connects with the power supply chip；
Described power supply chip, it is the vehicle for being connected by serial peripheral equipment interface SPI bus with the single-chip microcomputer
Controller provides supply voltage, and polytype wake-up signal of outside input is received by wake-up signal input interface, described
Polytype wake-up signal includes wake-up signal corresponding to every kind of bus, when the wake-up signal is effective, the vehicle control
Device processed is in wake-up states；
Preferably, the transceiver bus includes：CAN, LIN buses and FlexRay buses, the transceiver include：
There is CAN to wake up work(for CAN transceiver, LIN bus transceivers and FlexRay bus transceivers, the CAN transceiver
Can, the LIN transceivers have LIN bus arousal functions, and the FlexRay transceivers have FlexRay bus arousal functions.
Preferably, described entire car controller also includes：
Input signal processing circuit, for being connected by serial peripheral equipment interface SPI bus with the single-chip microcomputer, pass through wake-up
The sampled signal of polytype wake-up signal of signal sampling interface outside input, calculate the electricity of the sampled signal
Pressure value, the magnitude of voltage of the sampled signal is transferred to by the single-chip microcomputer by spi bus, to cause the single-chip microcomputer according to institute
The magnitude of voltage for stating sampled signal and the sampled signal judges the working condition of the entire car controller.
Preferably, described input signal processing circuit, it is additionally operable to connect with the power supply chip by spi bus, when
When the magnitude of voltage of the sampled signal is higher than the power supply level of the single-chip microcomputer, the sampling is believed by clamp diode
The portion voltage of the permission input level value higher than the single-chip microcomputer in number exports to the output port of the power supply chip；When
When the magnitude of voltage of the sampled signal is less than the GND level of the single-chip microcomputer, by clamp diode by the sampled signal
The portion voltage of the minimum input level value of permission less than the single-chip microcomputer export to GND.
Preferably, described entire car controller also includes：
Output signal processing circuit, for being connected by serial peripheral equipment interface SPI bus with the single-chip microcomputer, outwards output
Relay class control signal, resistor-type output signal and LED drive signal.
Preferably, the power supply chip, VDD, VDD1 and VDD2 are exported for the power supply including three tunnel independences, per electric all the way
Source output all carries decoupling capacitor, and the VDD provides power supply for single-chip microcomputer, and the VDD1 and VDD2 are external sensor and inside
Isolation circuit provides power supply.
Preferably, described single-chip microcomputer, it is additionally operable to be provided with the power control signal of the power supply chip, when the monolithic
When machine works, the power control signal is drawn high, when the external wake signal of the power supply chip all fails, the list
The power control signal is transferred to the power supply chip by piece machine by spi bus, using the power control signal by institute
State power supply chip wake-up.
Preferably, described single-chip microcomputer, be additionally operable to by CAN receive CAN transceiver send over it is to be brushed
Program, or, using diagnosed on the piece of single-chip microcomputer interface sended over by cordless communication network the reception server it is to be brushed
Program, the program writing to be brushed is stored in the memory cell of single-chip microcomputer.
Preferably, the power supply chip, for setting watchdog circuit input interface, the watchdog circuit input interface
The watchdog circuit output interface of the single-chip microcomputer is connected, when the single-chip microcomputer normal work, the power supply chip passes through institute
The watchdog pulse that watchdog circuit input interface receives the single-chip microcomputer output is stated, when power supply chip interval setting time
The watchdog pulse of the single-chip microcomputer output is not received by, then judges the single-chip microcomputer operation irregularity.
Preferably, the power supply chip, output interface is resetted for setting, the reset output interface connects the single-chip microcomputer
Reset input interface, after the power supply chip judges the single-chip microcomputer operation irregularity, by it is described reset output interface to
The single-chip microcomputer exports reset signal, by the reset signal by the monolithic processor resetting.
The embodiment of the present invention proposes a kind of performance it can be seen from the technical scheme provided by embodiments of the invention described above
The VCU of the safe and reliable integrated gateway function for pure electric automobile, the VCU are equipped with substantial amounts of peripheral bus chip, and
And can compatible more bus types, so as to possess bigger Internet communication capacity, realize gateway function.Electricity in VCU
The wake-up input of source chip includes：Firing key wake-up, charging wake-up, Remote Wake Up, clock wake-up, CAN wake-up, LIN
Bus wakes up, FlexRay buses wake up and bodywork system wakes up etc., and each wake-up input has detection signal, ensures that VCU can
To start corresponding mode of operation under various required working conditions.
The additional aspect of the present invention and advantage will be set forth in part in the description, and these will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Accompanying drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this
For the those of ordinary skill of field, without having to pay creative labor, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is a kind of general structure Organization Chart of the entire car controller of integrated gateway function provided in an embodiment of the present invention.
Fig. 2 is a kind of power supply chip TLE4471 circuit theory diagrams provided in an embodiment of the present invention.
Fig. 3 is a kind of driving chip TLE8718SA structured flowchart provided in an embodiment of the present invention.
Fig. 4 is a kind of CAN transponder chip TLE6251-3G circuit block diagram provided in an embodiment of the present invention.
Fig. 5 is a kind of FlexRay bus transceivers chip TLE9221SX circuit block diagram provided in an embodiment of the present invention.
Fig. 6 is a kind of LIN network transceivers chip TLE7269 circuit block diagram provided in an embodiment of the present invention.
Fig. 7 is a kind of VCU provided in an embodiment of the present invention power supply input signal voltage collection circuit schematic diagram.
Fig. 8 is a kind of VCU provided in an embodiment of the present invention 12V level input signal process circuit schematic diagrams.
The resistance and voltage sensor input signal processing circuit that Fig. 9 is a kind of VCU provided in an embodiment of the present invention are former
Reason figure.
Figure 10 is a kind of VCU provided in an embodiment of the present invention amperometric sensor input signal processing circuit schematic diagram.
Figure 11 is a kind of VCU provided in an embodiment of the present invention sheet sand covered interface circuit schematic diagram.
Embodiment
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is the element of same or like function.Below by ginseng
The embodiment for examining accompanying drawing description is exemplary, is only used for explaining the present invention, and is not construed as limiting the claims.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singulative " one " used herein, " one
It is individual ", " described " and "the" may also comprise plural form.It is to be further understood that what is used in the specification of the present invention arranges
Diction " comprising " refer to the feature, integer, step, operation, element and/or component be present, but it is not excluded that in the presence of or addition
One or more other features, integer, step, operation, element, component and/or their groups.It should be understood that when we claim member
Part is " connected " or during " coupled " to another element, and it can be directly connected or coupled to other elements, or there may also be
Intermediary element.In addition, " connection " used herein or " coupling " can include wireless connection or coupling.Wording used herein
"and/or" includes any cell of one or more associated list items and all combined.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific terminology) with the general understanding identical meaning with the those of ordinary skill in art of the present invention.Should also
Understand, those terms defined in such as general dictionary, which should be understood that, to be had and the meaning in the context of prior art
The consistent meaning of justice, and unless defined as here, will not be with idealizing or the implication of overly formal be explained.
For ease of the understanding to the embodiment of the present invention, done further by taking several specific embodiments as an example below in conjunction with accompanying drawing
Explanation, and each embodiment does not form the restriction to the embodiment of the present invention.
A kind of VCU of integrated gateway function for pure electric automobile provided in an embodiment of the present invention, the VCU select bus
Acp chip of the strong microcontroller of aboundresources, operational capability as VCU, by all kinds of bus transceivers with vehicle network phase
Even.Meanwhile in order that VCU can start work under various operating modes, various vehicle working condition marking signals are also add, make
Inputted for VCU wake-up.
VCU central processing unit uses the XC2298H single-chip microcomputers of Infineon, and the single-chip microcomputer possesses abundant bus resource,
Including 6 CAN nodes totally 256 message objects, 2 road FlexRay passages and 10 road USBs.Wherein 6 CAN
Node, which all possesses automatic forwarding capability, (it is single without consuming can be automatically forwarded to the message of a CAN node another node
The resource of piece machine kernel, substantially increase the operating efficiency of single-chip microcomputer), and 10 road USBs are programmed for SPI
(Serial Peripheral Interface, Serial Peripheral Interface (SPI)), IIC (Inter-Integrated Circuit, are integrated
Circuit bus), LIN (a variety of buses such as (Local Interconnect Network, Local Interconnect Network), ensure microcontroller
Control ability of the device to peripheral circuit.In addition, XC2298H single-chip microcomputer dominant frequency reaches 100MHz, there is 1600KB program storage
Space and 138KB static storage, and 150 universal input and output ports and 30 analog sampling inputs, Ke Yiman
Sufficient VCU data acquisition, computing and process demand.
VCU power supply chip can be by the 12V level conversions of Vehicular accumulator cell using TLE4471 chips, the chip
For the 5V level required for single-chip microcomputer XC2298H work.The chip has enabled control input simultaneously, when enabled input is effective
When, VCU is in wake-up states, and when enabled input is invalid, VCU is in a dormant state.It is electric in the controller of the embodiment of the present invention
The wake-up input of source chip includes：Firing key wake-up, charging wake-up, Remote Wake Up, clock wake-up, CAN wake-up, LIN
Bus wakes up, FlexRay buses wake up and bodywork system wakes up etc., and each wake-up input has detection signal, ensures that VCU can
To start corresponding mode of operation under various required working conditions.
In order to realize gateway function, VCU is equipped with substantial amounts of peripheral bus chip.In terms of CAN, VCU has used 6
TLE6251-3G high-speed CAN transceivers, the chip possess CAN and waken up and error diagnosis function.In terms of LIN buses, VCU makes
It is 1 TLE7269G transceiver, the chip has 2 road LIN passages, has the wake-up of LIN buses and fault diagnosis functions.
In terms of FlexRay buses, VCU uses 2 TLE9221SX transceivers, and the chip has FlexRay bus arousal functions.
Core control parts of the VCU as pure electric automobile, also need to gather substantial amounts of vehicle shape in addition to bus signals
State signal, including the driver intention such as accelerator pedal, brake pedal, Isolating Switch, gear, electric model switch judge input letter
Number, the detection signal of various power supply wake-up signals, high-low pressure interlocking, fast and slow charge connection confirmation signal, safety belt, air bag etc.
Safe input signal, the selection of air-conditioning gear, air-conditioning switch, temperature sensor, vacuum servo pressure sensor, air-conditioning duct pressure
The electric accessory system condition input signals such as power, electric turning booster system failure, DC/DC failures, probe power voltage monitoring,
The in-line power security monitoring signal such as electric power system voltage monitoring.
At the same time, VCU is also responsible for the control function of some electric-controlled parts of vehicle, ensure pure electric automobile can safely,
Reliably, efficient operation.These control signals include：The control of battery system high-voltage relay, fast charge system high pressure relay control
System, the control of air-conditioning system high-voltage relay, the control of high low speed cooling fan relay, cooling water pump Control, back-up lamp relay
The output signals such as device control, the control of instrument rechargeable lamp, vavuum pump drive control.Because the driving current of these chips is all much high
In the maximum drive current value of single-chip microcomputer XC2298H output ports, so VCU employs driving chip TLE8718SA, by
XC2298H carries out output control and fault diagnosis by spi bus to TLE8718SA driving chips.
VCU also provides two kinds of programs for XC2298H single-chip microcomputers and writes with a brush dipped in Chinese ink mode.One kind is that CAN writes with a brush dipped in Chinese ink mode, passes through 6 tunnels
The 1st tunnel bus in CAN, carries out data transmission according to the communications protocol that XC2298H single-chip microcomputers are specified, by journey to be write with a brush dipped in Chinese ink
Sequence code writes the program storage unit (PSU) of XC2298H single-chip microcomputers.Second method is to diagnose interface on piece to write with a brush dipped in Chinese ink mode, is passed through
Interface is diagnosed on the piece of XC2298H single-chip microcomputers both can carry out in-circuit emulation to XC2298H single-chip microcomputers, can also will be to be write with a brush dipped in Chinese ink
Program code writes the program storage unit (PSU) of XC2298H single-chip microcomputers.
Fig. 1 is the VCU of the integrated gateway function for pure electric automobile of embodiment of the present invention general principles Organization Chart,
Including Master control chip, power supply and reset management module, output signal processing and diagnostic module, CAN communication module, LIN communications
Module, FlexRay communication modules, power input process circuit, 12V level input signals process circuit, resistance and voltage class pass
Sensor input signal processing circuit, current capacity sensor process circuit.VCU has a variety of abilitys to communicate, including CAN, LIN and
FlexRay buses, and every kind of bus can provide wake-up signal；Single-chip microcomputer XC2298H supply voltage, external sensor
Supply voltage, the power supply of isolation circuit, all completed by a TLE4471 integrated chip；All relays of entire car controller
Device class control signal, resistor-type output signal, LED drive signal, all completed by a TLE8718SA integrated chip.
Single-chip microcomputer XC2289H in Fig. 1 is the core processor of controller, TLE4471, TLE6251-3G, TLE7269,
The chips such as TLE9221SX, TLE8718SA are the peripheral chip of the controller of the embodiment of the present invention.Single-chip microcomputer XC2289H passes through electricity
Source chip TLE4471 obtains the supply of 5V power supplys, passes through transponder chip TLE6251-3G, TLE7269, TLE9221SX and outside
CAN, LIN buses, FlexRay buses carry out information exchange, and external loading is entered by driving chip TLE8718SA
Row control.
TLE4471 is the power supply supply chip of the controller of the embodiment of the present invention, and its schematic diagram is as shown in Figure 2.TLE4471
It is the 5V power supplys needed for single-chip microcomputer XC2298H work by the 12V power conversions of outside, when the voltage range of external power source is 9-
During 16V, TLE4471 can normal work.And TLE4471 chips are in addition to power input, it is also necessary to enabled input signal,
The enabled input signal can be firing key wake-up, charging wake-up, Remote Wake Up, clock wake-up, CAN network wake-up, LIN nets
The wake-up signals such as network wake-up, FlexRay WOLs and bodywork system wake-up, wherein any one wake-up signal is high level,
Then power supply chip can be with normal work.In addition to external wake signal, TLE4471 has also reserved a power supply for single-chip microcomputer
Signal, after single-chip microcomputer is started working, single-chip microcomputer at once draws high the signal, accordingly even when external wake signal all fails
When, single-chip microcomputer XC2298H still can keep TLE4471 normal works by the power control signal.TLE4471 each wake-up
Signal all have passed through an isolating diode before power supply chip is entered, and such single-chip microcomputer XC2289H is normal in power supply chip
Can be by being sampled to each wake-up signal, so as to judge to appear in which kind of work controller is in exactly after work
State.
Power supply chip TLE4471 has three-way power output, and three road output voltages are all 5V, and wherein VDD provides for single-chip microcomputer
Power supply, VDD1 and VDD2 provide power supply for external sensor (accelerator pedal, gear etc.) and internal insulation circuit.In order that output
Supply voltage is more steady, and decoupling capacitor is all carried per the output of power supply all the way, and VDD marks as one that whole controller works
Will position, a power supply instruction LED is provided with, conveniently quickly determines that whether controller is in running order during debugging.
WatchDog Timer (WDT, Watch Dog Timer) is a part of single-chip microcomputer, and it is actually one
Individual counter, typically give house dog one big number, house dog starts to count down after program brings into operation.If program is run just
Often, CPU should send instruction and allow watchdog reset after a while, restart to count down.If house dog reduces to 0 and is considered as journey
Sequence does not have normal work, forces whole system to reset.
The power supply chip TLE4471 of the controller of the embodiment of the present invention also has the function of monitoring singlechip working condition.
WDI pins be power supply chip TLE4471 watchdog circuit input, while be also single-chip microcomputer XC2289H watchdog circuit it is defeated
Go out pin.PORST be power supply chip TLE4471 monitoring export, while be also single-chip microcomputer XC2289H power reset input draw
Pin., it is necessary to which timing shows single-chip microcomputer to power supply chip TLE4471 output pulse signals during single-chip microcomputer XC2289H normal works
XC2289H working conditions are normal.Once single-chip microcomputer XC2289H cisco unity malfunctions, then it can not continue output watchdog pulse.When
More than 50 milliseconds pulse inputs for not receiving single-chip microcomputer XC2289H of power supply chip TLE4471, then judge single-chip microcomputer XC2289H works
Make exception, so as to which PORST pins be dragged down, reset single-chip microcomputer XC2289H.
Fig. 3 is the pio chip TLE8718SA of controller circuit block diagram.It can be seen that pio chip
TLE8718SA is controlled by single-chip microcomputer XC2289H, and control mode is SPI serial data transmissions.Single-chip microcomputer XC2289H not only may be used
To carry out output control to TLE8718SA by spi bus, event can also be carried out to TLE8718SA all output channels
Barrier diagnosis, include the load open circuit of each passage, the diagnosis to the excessively high failure of load short circuits, shorted to earth and temperature.
TLE8718SA shares 18 output channels, and the fan-out capability of two of which passage is 8A, the output energy of two passages
Power is 3A, and the fan-out capability of 10 passages is 2.2A, and the fan-out capability of 4 passages is 0.6A, and each passage can be subjected to 50-
60V surge voltage impact.6 passages such as passage 5-10 in 18 passages are can be shielded to export by single-chip microcomputer XC2289H
, when the level of TLE8718SA DIS5_10 pins is high, passage 5-10 allows to export, when the level of DIS5_10 pins
For it is low when, passage 5-10 forbids exporting.
TLE8718SA also has voltage monitoring function.Due to VDD input pins level to TLE8718SA chips very
It is important, determine whether the logic circuit of the chip can be with normal work.So TLE8718SA chips can be to VDD magnitude of voltage
It is monitored, when VDD voltage is higher than 5.5V or less than 4.5V, TLE8718SA chips can forbid all output channels
Output function, while ABE pin levels are dragged down.Likewise, when TLE8718SA chips detect that the voltage of SVBATT pins is high
When 30V, it can also forbid the output function of all output channels.
Fig. 4 is the CAN circuit frame diagram of controller.Because single-chip microcomputer XC2289H shares 6 road CAN passages, so controller
6 road CAN passages are inside configured with altogether, correspond to the former car high-speed CAN bus of pure electric automobile respectively, former car low speed CAN, newly
CAN is reserved on energy CAN, fast charge CAN, power battery information CAN and 1 road.New energy CAN therein
Bus except with it is extraneous carry out CAN information exchange in addition to, also write with a brush dipped in Chinese ink function with CAN, you can with by this road CAN to monolithic
Machine XC2289H carries out writing with a brush dipped in Chinese ink for program code.
Per CAN bus circuit all the way all as shown in figure 4, chip TLE6251-3G passes through RxD as CAN transceiver
With TxD pins information transfer is carried out with single-chip microcomputer XC2289H.Single-chip microcomputer XC2289H is by EN and NSTB pins to TLE6251-
3G mode of operation is controlled, and TLE6251-3G chips feed back transceiver work by NERR pins to single-chip microcomputer XC2289H
Whether normal make state.
CANH and CANL is chip TLE6251-3G CAN network differential signal, and two 60 ohm of resistant series are one
The terminal resistance as this CAN is played, if controller does not need configurating terminal resistance in this CAN, this two
Individual resistance can not weld.51uH common mode inductance is for suppressing the common mode disturbances in CAN, improving the letter of CAN
Number stability.
Chip TLE6251-3G has CAN arousal functions.Above-mentioned CAN wake-up signal is i.e. by chip
TLE6251-3G is provided.When controller in a dormant state, i.e., when power supply chip TLE4471 enabled input is invalid, if CAN
Occur bus message in bus, i.e. when the level of bus last CANH and CANL reaches CAN level standard, chip
TLE6251-3G INH pins will export high level, and power supply chip TLE4471 is waken up, so as to which whole controller be waken up.
On CAN arousal functions, it is necessary to do following 2 points of explanations：First, the wake-up output of 6 tunnel CANs is directly connected together, single
Piece machine XC2289H be waken up after by analyzing CAN data it may determine that being that information on which road CAN wakes up controller；2nd,
6 road CAN are configured with CAN arousal functions, if which part bus does not need CAN arousal functions, it is only necessary to by VBatt and
Diode between chip TLE6251-3G Vs pins does not weld.
Fig. 5 is the FlexRay bus circuit frame diagrams of controller.The controller of the embodiment of the present invention shares two-way
FlexRay buses, information exchange is carried out with on-vehicle host all the way, another way is reserved.Chip TLE9221SX passes through RxD and TxD
Pin with single-chip microcomputer XC2289H carry out information transfer, between single-chip microcomputer XC2289H and chip TLE9221SX by EN, BGE,
The pins such as RxEN, TxEN, STBN carry out data transmission control and working state control.Controller is by BP and BM pins with extraneous
Bus carries out information exchange.And inductance LCMC use is in order to which FlexRay buses improve anti-common mode disturbances ability.WAKE pins
For the input pin of chip, the controller of the embodiment of the present invention is without this function, so the pin is grounded.
Chip TLE9221SX has FlexRay bus arousal functions.Above-mentioned FlexRay buses wake up letter
Number i.e. provided by chip TLE9221SX.Similar with CAN wake-up, message can pass through chip in FlexRay buses
TLE9221SX wakes up power supply chip TLE4471, so as to which whole controller be waken up.
Fig. 6 is the LIN bus circuit frame diagrams of controller.The controller of the embodiment of the present invention includes a piece of TLE7269 cores
Piece drives two-way LIN buses, carries out information exchange with vehicle diagnosis interface all the way, another way is reserved.Chip TLE7269 passes through
RxD and TxD pins with single-chip microcomputer XC2289H carry out information transfer, between single-chip microcomputer XC2289H and chip TLE7269 by EN,
The pins such as W2O carry out data transmission and working state control.Controller carries out information exchange by BUS pins with extraneous bus.
Chip TLE7269 has LIN bus arousal functions.Above-mentioned LIN buses wake-up signal is i.e. by chip
TLE7269 is provided.Similar with CAN wake-up, message can be by chip TLE7269 by power supply chip in LIN buses
TLE4471 wakes up, so as to which whole controller be waken up.
Fig. 7-10 is the input signal processing circuit of controller.
In Fig. 7, power input include battery feed, firing key wake up, charging wake-ups, Remote Wake Up, clock wake-up,
The input signals such as CAN wakes up, LIN buses wake up, FlexRay buses wake up and bodywork system wakes up.Single-chip microcomputer collection
Voltage V1 and supply voltage Vs relation is：
In Fig. 8,12V level input signals include brake pedal, Isolating Switch, electric model switch, high-low pressure and interlock, be fast
Trickle charge connection confirmation signal, safety belt, air bag, the selection of air-conditioning gear, air-conditioning switch, air-conditioning duct pressure, electric powered steering
The input signals such as power boost failure, DC/DC failures.The voltage V2 and 12V level signal voltage Vd of single-chip microcomputer collection relation
It is：
When input signal is not hanging,
When input signal is hanging,
In Fig. 9, the input signal of voltage resistance type sensor includes accelerator pedal signal, gear, temperature sensor, vacuum
The sensor signals such as boost pressure sensor.The voltage V3 and voltage resistance type sensor input signal voltage of single-chip microcomputer collection
Vsen relation is：
V3=Vsen
In Figure 10, the input signal of amperometric sensor refers to vehicle speed sensor signal.Single-chip microcomputer collection voltage V4 and
Amperometric sensor current input signal Isen relation is：
V4=R1 × Isen
In Fig. 7-10, all inputs and sampled signal are all the analog signal processing modules into single-chip microcomputer, monolithic
Machine XC2298H can coordinate the magnitude of voltage collected according to the actual working state of current pure electric automobile, to judge the signal
It is which kind of state be in, substantially increases signal judgement and the degree of accuracy of voltage acquisition.The effect of operational amplifier is all by list
Piece machine is kept apart with external circuit, prevents single-chip microcomputer from being disturbed by external signal, while operational amplifier serves as voltage follower, is protected
It is accurate to demonstrate,prove sample voltage value.Electric capacity C1 is arranged near the connector of control, and signal is entered after external signal enters controller
Row filtering, the high-frequency interferencing signal in signal is filtered out.Electric capacity C2 is arranged in around single-chip microcomputer, will before signal enters single-chip microcomputer
Signal high frequency signal filters out, and strengthens the accuracy of signal measurement.The effect of two clamp diodes is to prevent input voltage from surpassing
Go out the permission input level value of single-chip microcomputer, (the single-chip microcomputer power supply when the voltage for inputting single-chip microcomputer is higher than VDD1 level
Level), the signal being higher by is exported to VDD1 networks by diode, when the voltage for inputting single-chip microcomputer is less than GND level, diode
By it is low go out signal export to GND networks.GND represents in above-mentioned electronic circuit that publicly GND level represents zero potential
(no-voltage)；
Figure 11 be single-chip microcomputer XC2298H sheet sand covered interface, TDI, TDO, TCK be data transfer signal wire, TRST,
PORST, TMS are single-chip microcomputer XC2298H operating mode control signals.By sheet sand covered interface, user can be to single-chip microcomputer
The program of upper operation is emulated and tracked, it is easier to finds leak present in software.At the same time, user can also pass through
Sheet sand covered interface carries out program code to single-chip microcomputer XC2298H and write with a brush dipped in Chinese ink.
In summary, the embodiment of the present invention proposes the integrated gateway that a kind of performance safety is reliably used for pure electric automobile
The VCU of function, the VCU are equipped with substantial amounts of peripheral bus chip, have used 6 TLE6251-3G high-speed CAN transceivers, and
Can compatible more bus types, there are more bus runs, so as to possess bigger Internet communication capacity, realize net
Close function.
Existing pure electric automobile VCU, its working condition are only restricted in the 2-3 shapes such as firing key unlatching, Vehicular charging
State, the wake-up input of the power supply chip in the VCU of the embodiment of the present invention include：Firing key wakes up, charging wakes up, remotely called out
Awake, clock wake-up, CAN wake-up, the wake-up of LIN buses, the wake-up of FlexRay buses and bodywork system wake-up etc., and each call out
Awake input has detection signal, ensures that VCU can start corresponding mode of operation under various required working conditions.
Existing pure electric automobile VCU, operate consciousness input, this hair by driver of legacy devices such as gear, pedals more
The VCU of bright embodiment not only judges these signals, also allows FlexRay bus same VCU of the driver by vehicular amusement apparatus
Information exchange is carried out, while certain command operating is carried out to VCU.
Communication between existing pure electric automobile VCU, with other electric automobile critical components (such as motor, battery) with
Based on CAN communication, the VCU of the embodiment of the present invention is not only communicated by CAN with motor and battery, also total by LIN
Line carries out the secondary-confirmation of key message with these parts, strengthens the reliability of power network connection.
Existing pure electric automobile VCU, not possessing gateway function more, the VCU of the embodiment of the present invention is integrated with gateway function,
Vehicle network comb and planned again, meets the integrated trend of vehicle, reduces integral vehicle cost, while be easy to network
Message is encrypted so that the internet security of vehicle is improved.
One of ordinary skill in the art will appreciate that：Accompanying drawing is the schematic diagram of one embodiment, module in accompanying drawing or
Flow is not necessarily implemented necessary to the present invention.
As seen through the above description of the embodiments, those skilled in the art can be understood that the present invention can
Realized by the mode of software plus required general hardware platform.Based on such understanding, technical scheme essence
On the part that is contributed in other words to prior art can be embodied in the form of software product, the computer software product
It can be stored in storage medium, such as ROM/RAM, magnetic disc, CD, including some instructions are causing a computer equipment
(can be personal computer, server, either network equipment etc.) performs some of each embodiment of the present invention or embodiment
Method described in part.
Each embodiment in this specification is described by the way of progressive, identical similar portion between each embodiment
Divide mutually referring to what each embodiment stressed is the difference with other embodiment.Especially for device or
For system embodiment, because it is substantially similar to embodiment of the method, so describing fairly simple, related part is referring to method
The part explanation of embodiment.Apparatus and system embodiment described above is only schematical, wherein the conduct
The unit that separating component illustrates can be or may not be it is physically separate, can be as the part that unit is shown or
Person may not be physical location, you can with positioned at a place, or can also be distributed on multiple NEs.Can root
Factually border needs to select some or all of module therein realize the purpose of this embodiment scheme.Ordinary skill
Personnel are without creative efforts, you can to understand and implement.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can readily occur in,
It should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims
It is defined.
Claims (7)
- A kind of 1. entire car controller of the pure electric automobile of integrated gateway function, it is characterised in that including：Single-chip microcomputer, power supply core The transceiver of piece, a variety of bus types；Described transceiver, for being connected by transceiver bus with the single-chip microcomputer, access the total of the transceiver corresponding types Line；Described single-chip microcomputer, for being connected respectively by a plurality of transceiver bus with the transceiver of various bus types, by serial Peripheral Interface spi bus connects with the power supply chip；Described power supply chip, it is the full-vehicle control for being connected by serial peripheral equipment interface SPI bus with the single-chip microcomputer Device provides supply voltage, and polytype wake-up signal of outside input is received by wake-up signal input interface, described a variety of The wake-up signal of type includes wake-up signal corresponding to every kind of bus, when the wake-up signal is effective, the entire car controller In wake-up states；Wherein, the transceiver bus includes：CAN, LIN buses and FlexRay buses, the transceiver include：CAN Transceiver, LIN bus transceivers and FlexRay bus transceivers, the CAN transceiver has CAN arousal function, described LIN transceivers have LIN bus arousal functions, and the FlexRay transceivers have FlexRay bus arousal functions；Input signal processing circuit, for being connected by serial peripheral equipment interface SPI bus with the single-chip microcomputer, pass through wake-up signal Sampling Interface receives the sampled signal of polytype wake-up signal of outside input, calculates the voltage of the sampled signal Value, is transferred to the single-chip microcomputer, to cause the single-chip microcomputer according to by spi bus by the magnitude of voltage of the sampled signal The magnitude of voltage of sampled signal and the sampled signal judges the working condition of the entire car controller；Described input signal processing circuit, it is additionally operable to connect with the power supply chip by spi bus, when the sampled signal Magnitude of voltage be higher than the single-chip microcomputer power supply level when, institute will be higher than in the sampled signal by clamp diode The portion voltage for stating the permission input level value of single-chip microcomputer exports to the output port of the power supply chip；When the sampled signal Magnitude of voltage be less than the single-chip microcomputer GND level when, the list will be less than in the sampled signal by clamp diode The portion voltage of the minimum input level value of permission of piece machine exports to GND.
- 2. the entire car controller of the pure electric automobile of integrated gateway function according to claim 1, it is characterised in that described Entire car controller also include：Output signal processing circuit, for being connected by serial peripheral equipment interface SPI bus with the single-chip microcomputer, outwards export relay Device class control signal, resistor-type output signal and LED drive signal.
- 3. the entire car controller of the pure electric automobile of integrated gateway function according to claim 2, it is characterised in that：The power supply chip, VDD, VDD1 and VDD2 are exported for the power supply including three tunnel independences, per the output of power supply all the way all bands There is decoupling capacitor, the VDD provides power supply for single-chip microcomputer, and the VDD1 and VDD2 are that external sensor and internal insulation circuit carry Power supply source.
- 4. the entire car controller of the pure electric automobile of integrated gateway function according to claim 1, it is characterised in that：Described single-chip microcomputer, it is additionally operable to be provided with the power control signal of the power supply chip, will when the single-chip microcomputer works The power control signal is drawn high, and when the external wake signal of the power supply chip all fails, the single-chip microcomputer passes through SPI The power control signal is transferred to the power supply chip by bus, is called out the power supply chip using the power control signal Wake up.
- 5. the entire car controller of the pure electric automobile of integrated gateway function according to claim 1, it is characterised in that：Described single-chip microcomputer, the program writing to be brushed for receiving CAN transceiver by CAN and sending over is additionally operable to, or, The program writing to be brushed sended over using interface is diagnosed on the piece of single-chip microcomputer by cordless communication network the reception server, by described in Program writing to be brushed is stored in the memory cell of single-chip microcomputer.
- 6. the entire car controller of the pure electric automobile of the integrated gateway function according to any one of Claims 1-4, its feature It is：The power supply chip, for setting watchdog circuit input interface, the watchdog circuit input interface connects the list The watchdog circuit output interface of piece machine, when the single-chip microcomputer normal work, the power supply chip passes through house dog electricity Road input interface receives the watchdog pulse of the single-chip microcomputer output, and when the power supply chip interval, setting time is not received by The watchdog pulse of the single-chip microcomputer output, then judge the single-chip microcomputer operation irregularity.
- 7. the entire car controller of the pure electric automobile of integrated gateway function according to claim 6, it is characterised in that：The power supply chip, output interface is resetted for setting, the reset output interface connects the reset input of the single-chip microcomputer Interface, after the power supply chip judges the single-chip microcomputer operation irregularity, by the output interface that resets to the single-chip microcomputer Reset signal is exported, by the reset signal by the monolithic processor resetting.
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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 |
| CN107315364A (en) * | 2016-04-26 | 2017-11-03 | 河北优控新能源科技有限公司 | It is a kind of that there is the CAN telecommunication circuit for enabling control |
| 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 |
| CN106844084B (en) * | 2017-03-16 | 2020-03-17 | 北京新能源汽车股份有限公司 | Program control method and device and automobile |
| CN109421541B (en) * | 2017-08-21 | 2024-01-02 | 上海蔚来汽车有限公司 | Electric automobile power-on method based on wake-up source |
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| CN108415404A (en) * | 2018-02-12 | 2018-08-17 | 南京越博动力系统股份有限公司 | Modular entire car controller power supply and interface circuit and its design method |
| CN108762234B (en) * | 2018-06-11 | 2021-05-18 | 北京经纬恒润科技股份有限公司 | Vehicle body controller and control method thereof |
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