Invention content
For the defects in the prior art, the object of the present invention is to provide a kind of distance increasing units for pure electric automobile.
According to the distance increasing unit provided by the present invention for pure electric automobile, including：Permanent magnet generator, vehicle-mounted distance increasing unit, instituteState the battery that the electric energy of transmission is supplied to electric vehicle by permanent magnet generator by the vehicle-mounted distance increasing unit, wherein the vehicle-mounted increasingThe output voltage of journey device can be consistent with the busbar voltage detected, realize firm power output.
Preferably, the vehicle-mounted distance increasing unit includes：Commercial power interface, permanent magnet generator power supply interface and multiple signaling interfaces,Wherein, the commercial power interface is connected to mains electricity input end, and the permanent magnet generator power supply interface is connected to permanent magnet generator, describedMultiple signaling interfaces are connected with engine controller, busbar, brake high voltage end and cab control interface respectively；And it is describedVehicle-mounted distance increasing unit can receive the detection signal that BMS battery management systems detect, the detection signal by entire car controllerIncluding：Electricity, the voltage and current of battery.
Preferably, entire car controller detects the electricity of battery in real time, described when the remaining capacity of battery is less than setting valueEntire car controller sends the signal for opening permanent magnet generator to driver's cabin, and cab control interface is defeated according to the driver receivedPermanent magnet generator is opened in the instruction entered；
When the remaining capacity of battery reaches setting value by being less than setting value, the entire car controller, which is sent, closes permanent magnetism hairPermanent magnet generator is closed in the signal of motor to driver's cabin, cab control interface according to the instruction that the driver received inputs.
Preferably, double power supply converting switch ATS, the double power supply converting switch ATS are provided on the vehicle-mounted distance increasing unitDetect whether the commercial power interface or permanent magnet generator power supply interface have the alternating current of input；
When detecting that alternating current comes from commercial power interface, BMS battery management systems are by entire car controller by the electricity of batteryAmount, voltage signal are transmitted to vehicle-mounted distance increasing unit；
When the alternating current detected comes from permanent magnet generator power supply interface, vehicle-mounted distance increasing unit enters soft start stage, instituteIt refers to that vehicle-mounted distance increasing unit steps up output power until reaching mesh according to the busbar voltage detected in real time to state the soft start stageAfter marking power, keep exporting constant target power.
Preferably, when having high voltage input at vehicle-mounted distance increasing unit detects brake high voltage end, the voltage of busbar increases,Then vehicle-mounted distance increasing unit also improves output voltage so that the voltage of the output is consistent with the voltage of busbar；
When entire car controller sends signal to the driver's cabin for closing permanent magnet generator, instruction is inputted by driver and is closed foreverMagnetic generator, the permanent magnet generator enters time-delay closing state, after vehicle-mounted distance increasing unit receives closing permanent magnet generator instructionEnter the soft unloading stage using the delay time of permanent magnet generator, the soft unloading stage refers in vehicle-mounted distance increasing unit according in real timeThe busbar voltage detected gradually reduces output power until completion of discharge.
Preferably, multiple signaling interfaces of the vehicle-mounted distance increasing unit are provided with D.C. contactor, the commercial power interface and foreverMagnetic generator power supply interface is provided with A.C. contactor, when vehicle-mounted distance increasing unit receives the emergent stop signal of permanent magnet generator transmissionAfterwards, vehicle-mounted distance increasing unit disconnects the D.C. contactor and A.C. contactor immediately.
Preferably, the vehicle-mounted distance increasing unit is additionally provided with open-phase protection, high temperature protection, overvoltage protection, overcurrent protection, under-voltageProtection, short-circuit protection, reverse connecting protection, ground protection, insulation protection circuit, lightning protection.
Preferably, when commercial power interface and the equal input AC electricity of permanent magnet generator power supply interface, vehicle-mounted distance increasing unit is preferentially adoptedIt is battery charging with alternating current；When commercial power charged, the voltage of battery is maintained at ceiling voltage, and current reduction is a certain to what is setWhen value, it is believed that battery charging complete, vehicle-mounted distance increasing unit enter shutdown programm.
Compared with prior art, the present invention has following advantageous effect：
1, provided by the present invention for the distance increasing unit of pure electric automobile, it can be realized when electric vehicle is run and battery is filledElectricity effectively improves electric vehicle cruising ability.
2, provided by the present invention for the distance increasing unit of pure electric automobile, there is high voltage feedback electromotive force encountering brakeWhen, distance increasing unit can be adjusted to voltage identical with busbar in time, ensure that distance increasing unit does not depart from power supply network, normal power supply.
3, provided by the present invention for the distance increasing unit of pure electric automobile, it can realize that firm power exports, effective protection hairMotor.
Specific implementation mode
With reference to specific embodiment, the present invention is described in detail.Following embodiment will be helpful to the technology of this fieldPersonnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this fieldFor personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present inventionProtection domain.
Include provided by the present invention for pure electric automobile distance increasing unit：Permanent magnet generator 1, vehicle-mounted distance increasing unit 4.Permanent magnet generatorMachine 1 is used as energy source, endlessly Vehicular battery 8 is given to charge by Vehicular charger, to achieve the purpose that increase journey.
Entire car controller 11 detects the electricity of battery 8 in real time, when the remaining capacity of battery 8 is less than 30%, full-vehicle controlDevice 11 can send signal prompt driver and open permanent magnet generator 1, be provided by permanent magnet generator 1 when vehicle-mounted distance increasing unit 4 is detectedAfter three-phase alternating current, vehicle-mounted distance increasing unit 4 starts, and starts self-test, into the soft start stage.Soft-start time is two minutes, outputVoltage is changed to perseverance according to the output voltage of the busbar 12 constantly detected, power increase 250W per second after increasing to 30KWDetermine power output.The output voltage in constant power charge stage, i.e. vehicle-mounted distance increasing unit 4 also becomes with the voltage change of busbar 12Change, when the high voltage that appearance brake generates, vehicle-mounted distance increasing unit 4 can adjust output voltage in time, and output voltage is made to keep and motherThe voltage of row 12 is consistent, ensures that vehicle-mounted distance increasing unit does not depart from power grid, while electric current can drop to analog value, to ensure that invariable power is defeatedGo out, protects generator.After the high voltage that brakes disappears, busbar voltage comes back to the voltage of battery 8, and vehicle-mounted distance increasing unit 4 detectsTo after newest busbar voltage, adjust voltage in time, with ensure 4 output voltage of vehicle-mounted distance increasing unit in real time with the voltage of busbar 12 oneIt causes, while electric current can rise to analog value, to ensure constant power output, protects generator.The voltage electricity of battery 8 reaches 85%When, entire car controller 11 signals to driver, and permanent magnet generator 1 is closed in request, and vehicle-mounted distance increasing unit 4 enters soft unloading rank at this timeSection.During soft unloading, the output voltage of vehicle-mounted distance increasing unit 4 is still identical as the busbar voltage constantly detected, output powerReduction 250W per second, soft unloading time are 2 minutes.After completion of discharge, the lock that breaks of permanent magnet generator 1 enters cooling shutdown phase.
Specifically, there are two exchanges to input for vehicle-mounted distance increasing unit 4, and one is the permanent magnetism inputted from permanent magnet generator power supply port 3The alternating current of generator 1, the other is the alternating current inputted from commercial power interface 2.When permanent magnet generator 1 generates electricity and charges to battery 8When, vehicle-mounted distance increasing unit 4 is not also communicated with entire car controller 11 with the communication of BMS battery management systems 7, and the electricity of battery 8 passes throughEntire car controller 11 is sent to driver's cabin real-time display and prompts whether driver opens generator, and driver controls permanent magnet generator 1Machine open/close, to realize unlatching/closing of vehicle-mounted distance increasing unit 4.When commercial power charged, vehicle-mounted distance increasing unit 4 and entire car controller 11It keeps in communication, output voltage is consistent with busbar voltage, and after battery 8 is fully charged, entire car controller 11 can be sent out to vehicle-mounted distance increasing unit 4It shuts down after sending stopping signal, vehicle-mounted distance increasing unit 4 to receive stopping signal, stops charging.
Vehicle-mounted distance increasing unit 4 starts：AC-input voltage is detected first, after detecting that alternating voltage meets entry condition,Vehicle-mounted distance increasing unit 4 enters self-test state, and self-test enters the soft start stage after passing through.
Vehicle-mounted distance increasing unit 4 is shut down：It is realized and is shut down by the stopping signal or alternating current stopping signal that receive generator.It is vehicle-mountedDistance increasing unit 4 enters the soft unloading stage after receiving stopping signal, and permanent magnet generator 1 enters 2 minutes disconnected lock ranks of delay at this timeSection.When mains-supplied is cut off the power, soft unloading program can be directly skipped, vehicle-mounted distance increasing unit 4 is directly closed.
4 emergency stop of vehicle-mounted distance increasing unit：After receiving the emergent stop signal of generator, vehicle-mounted distance increasing unit 4 enters emergency stop program, standsDisconnect the A.C. contactor of the D.C. contactor and ac input end of output end.At this moment internal capacitance electric energy passes through internal electricityIt hinders to consume.
The circuit protection function that vehicle-mounted distance increasing unit 4 is arranged has：Open-phase protection, high temperature protection, overvoltage protection, overcurrent protection,Under-voltage protection, short-circuit protection, reverse connecting protection, ground protection, insulation protection, lightning protection.
Two exchange input interfaces that the vehicle-mounted distance increasing unit 4 is detected by ATS, are by permanent magnet generator 1 when detectingWhen power supply, vehicle-mounted distance increasing unit 4 is not communicated with entire car controller 11；When detecting mains-supplied, vehicle-mounted distance increasing unit 4 and vehicleController 11 realizes communication.When two alternating current input interfaces are powered simultaneously, preferentially (is generally not in while supplying with alternating currentThe situation of electricity).
It charges for a long time after vehicle pull-in or in the unmanned charging for a long time of driver's cabin, in this case, acquiescence does not allow to usePermanent magnet generator 1 is the charging of battery 8 as power supply, it is necessary to commercial power charged.Permanent magnet generator 1 power supply be when being run for vehicleMicro USB electricity prepares, because vehicle charges when running, the high voltage that brake generates is had, if vehicle-mounted distance increasing unit 4 is logical with battery 8News, then output voltage can be exported according to cell voltage, cannot be consistent in real time with busbar voltage, such case will appear vehicle-mountedDistance increasing unit 4 be detached from power supply system, also result in permanent magnet generator 1 occur uprushing anticlimax the case where.
Specifically, the soft start/soft unloading is per second plus 250W loads, be in order to protect generator, prevent uprush/Anticlimax, smooth load/unload are more advantageous to generator.The Maximum Power Output of vehicle-mounted distance increasing unit 4 is 32KW, this is because being matchedThe maximum power that permanent magnet generator 1 exports is 35KW, and 4 constant power output of vehicle-mounted distance increasing unit is 30KW, is exported in vehicle-mounted distance increasing unit 4When power 30KW, the oil consumption of permanent magnet generator 1 is minimum.
Vehicle-mounted distance increasing unit 4 realizes that firm power output refers to that output power is constant in 30KW, by detecting busbar electricity in real timeThe output voltage of vehicle-mounted distance increasing unit 4 is adjusted when compacting, and output current at this time can also change with the variation of voltage, but it is totalPower be 30KW.
Permanent magnet generator 1 charges as power supply to battery 8 when electric vehicle is run：Entire car controller 11 passes through BMS batteriesManagement system 7 (Battery Management System battery management systems) detects battery capacity in real time.When the electricity of battery 8When amount is less than 30%, entire car controller 11 can signal to the manipulation interface of driver's cabin, and driver, which receives, opens vehicle-mounted distance increasing unit 4After signal, permanent magnet generator 1 is opened, by permanent magnet generator power supply interface 3 to vehicle after 1 starting up of permanent magnet generator, combined floodgateIt carries distance increasing unit 4 and power supply is provided.Double power supply converting switch ATS (Automatic Train Supervision) 16 detects permanent magnetismThe power supply that generator interface provides, while a signal is provided to vehicle-mounted distance increasing unit 4.Vehicle-mounted distance increasing unit 4 receives permanent magnet generatorAfter the ac supply signal of machine 1, start corresponding program, at this point, vehicle-mounted distance increasing unit 4 is not communicated with entire car controller 11.MeanwhileVehicle-mounted increasing journey 4 enters self-check program, and predominantly detecting input voltage, whether phase shortage, under-voltage, over-pressed and vehicle-mounted distance increasing unit 4 exportEnd whether with battery reversal connection, inside with the presence or absence of short circuit, high temperature etc..The self-test time is generally 3 seconds, after self-test, vehicle-mounted increasingJourney device 4 enters the soft start stage, and soft-start time is 2 minutes, and increase per second loads 250W, peak power output 30KW.
In soft start-up process, such as encounter braking automobile and the high voltage that generates, the output voltage meeting of vehicle-mounted distance increasing unit 4 andWhen be adjusted to identical voltage, with ensure vehicle-mounted distance increasing unit 4 be detached from power supply busbar 12.After soft start, vehicle-mounted distance increasing unit 4 is with specified work(Rate 30KW, keeps constant power output.When the high voltage generated due to brake makes busbar voltage increase, vehicle-mounted distance increasing unit 4Output voltage be accordingly adjusted to busbar voltage, while output current can reduce, and ensure that output power is constant in 30KW.Work as brakeAfter the high voltage of generation disappears, vehicle-mounted distance increasing unit 4 can readjust busbar voltage, and busbar voltage at this time is cell voltage,Output power is still 30KW.When battery capacity reaches 85%, entire car controller 11 can send the signal for closing vehicle-mounted distance increasing unit 4To the manipulation interface of driver's cabin.Driver closes permanent magnet generator 1 after receiving signal, at this point, permanent magnet generator 1 enters the disconnected lock of delayProgram, delay time are 2 minutes, while to the electric signal of 4 one 12V of vehicle-mounted distance increasing unit.Vehicle-mounted distance increasing unit 4 receives thisAfter the signal of 12V, into soft unloading program, still detection busbar voltage, electric current gradually reduce in real time at this time, make unloading per second250W.It 4 completion of discharge of vehicle-mounted distance increasing unit and shuts down after two minutes, permanent magnet generator 1 breaks lock, is shut down into cooling.Wherein, it is arrangedSoft start and soft unloading be provided to protection generating set, avoid the occurrence of the case where uprushing anticlimax.
After vehicle pull-in, charged the battery with alternating current：When commercial power interface detects AC power, vehicle-mounted increasing journey 4 is givenOne electric signal, vehicle-mounted distance increasing unit 4 enters self-check program, while vehicle-mounted distance increasing unit 4 carries out real-time communication with entire car controller 11,Entire car controller carries out real-time communication with BMS battery management systems 7, ensures that voltage, the electricity of battery, real-time delivery give vehicle-mounted increasingJourney device 4.After the completion of self-test, vehicle-mounted distance increasing unit 4 exports identical voltage according to the cell voltage or detection busbar voltage of communication,Electric current rises to after predetermined value (maximum power is no more than 32KW), and the vehicle-mounted distance increasing unit 4 enters constant-current charge state, is chargingIn the process, the voltage of battery 8 can be stepped up to the maximum voltage of setting.Then into constant voltage charging phase, voltage is maintained atCeiling voltage, electric current can gradually reduce, when current reduction is to setting minimum value, it is believed that battery has been filled with.Such case is got offShutdown programm can be entered by carrying distance increasing unit 4, prevented over-charging of battery, extended battery.When commercial power charged, vehicle-mounted distance increasing unit 4There is no soft start/soft unloading.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited in above-mentionedParticular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadowRing the substantive content of the present invention.