CN102673424A - Weak-current power supply system for power control unit (PCU) of electric automobile - Google Patents
Weak-current power supply system for power control unit (PCU) of electric automobile Download PDFInfo
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- CN102673424A CN102673424A CN2012101937760A CN201210193776A CN102673424A CN 102673424 A CN102673424 A CN 102673424A CN 2012101937760 A CN2012101937760 A CN 2012101937760A CN 201210193776 A CN201210193776 A CN 201210193776A CN 102673424 A CN102673424 A CN 102673424A
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Abstract
The invention relates to a weak-current power supply system for a power control unit (PCU) of an electric automobile, which comprises a storage cell, a usual power supply circuit and an unusual power supply circuit, wherein the storage cell supplies electricity to a minimum singlechipystem circuit of a vehicle control unit (VCU) module, a DI (discrete input)/DO (discrete output) unit circuit and a CAN communication interface circuit via the usual power supply circuit, and the storage cell supplies the electricity to an AI (analogue input)/AO (analogue output) unit circuit, a motor controller module, the relay group of the VCU module and a contactor of a high-voltage power distribution module via the unusual power supply circuit only when the switch of the electric automobile is turned off. According to the weak-current power supply system, the usual power supply circuit and the unusual power supply circuit are adopted to provide two power supply modes namely usual power supply and unusual power supply for PCU, and the electricity is supplied to partial circuits, which need to work, of the VCU module in standby when the switch of the electric automobile is turned off so as to ensure the awakening of the electric automobile, also reduce the standby power consumption to the greatest extent and solve the problem of long-time storage of the electric automobile. The weak-current power supply system is greatly convenient for use of a user, improves the rigid index of the electric automobile and is green and environment-friendly.
Description
Technical field
The present invention relates to the electric vehicle engineering field, more particularly, relate to a kind of electronlmobil PCU light current electric power system.
Background technology
The new-energy automobile technology changes the commercialization stage over to by the laboratory gradually at present; Energy-conservation, miniaturization, the developing direction that has become in the industry economical, in light weight; Power control system (PCU) is as its core component, and higher to its performance perameter requirement, wherein the index of power consumption is exactly one of them.
Power control system (PCU) is the car load kernel component system of electronlmobil; Undertaking multinomial functions such as control, computing, signal conversion processes, trouble diagnosing, communication and driving; It is according to the intention and the driving cycle of chaufeur; Carry out rational power distribution in real time and coordinate the energy Flow between each parts, to improve dynamic property, safety and the high efficiency of car load.At present, the weakness power supply of PCU keeps power supply by the 12V storage battery, because of accumulator capacity limited; When the battery-driven car key is OFF; The simple electric weight of battery stores that relies on supports stand-by power consumption, and when accumulator electric-quantity exhausted, this moment, other work of electronlmobil can't normally be carried out.Therefore the design of the light current power supply of present PCU is very easily when electronlmobil stores for a long time, owing to stand-by power consumption causes accumulator electric-quantity to exhaust greatly.
Summary of the invention
The technical matters that the present invention will solve is, the defective that stand-by power consumption is big a kind of electronlmobil PCU light current electric power system is provided to existing electronlmobil PCU light current power supply for the storage battery continued power makes.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of electronlmobil PCU light current electric power system, said PCU comprises VCU module, electric machine controller module, DC/DC converter module and high voltage power distribution module at least; Said VCU module comprises single-chip minimum system circuit, DI/DO element circuit, CAN communication interface circuit, AI/AO element circuit and R/G at least; Said high voltage power distribution module has the contactless switch group;
Said electronlmobil PCU light current electric power system comprises storage battery, normal feed circuit and unusual feed circuit; The input end of said normal feed circuit links to each other with the mouth of said storage battery, and the mouth of said normal feed circuit is connected to single-chip minimum system circuit, DI/DO element circuit and the CAN communication interface circuit of said VCU module respectively; Said normal feed circuit are used for converting said battery tension into operating voltage output; The input end of said very feed circuit links to each other with the mouth of said storage battery, and the mouth of said very feed circuit is connected to the R/G of the AI/AO element circuit of said VCU module, said electric machine controller module, said VCU module and the contactless switch group of said high voltage power distribution module respectively; Said very feed circuit are used for when the battery-driven car switch conduction, converting said battery tension into operating voltage output, when the battery-driven car switch breaks off, turn-off output.
In according to electronlmobil PCU light current electric power system of the present invention; Said VCU module also comprises the burned download circuit of program with the communication of said single-chip minimum system circuit, and the mouth of said normal feed circuit also is connected to the burned download circuit of program of said VCU module.
In according to electronlmobil PCU light current electric power system of the present invention, said high voltage power distribution module also has the insulating monitoring module, and the mouth of said very feed circuit also is connected to said insulating monitoring module.
In according to electronlmobil PCU light current electric power system of the present invention, said normal feed circuit comprise first switching power source chip, and the mouth of said storage battery converts operating voltage output power supply into through said first switching power source chip.
In according to electronlmobil PCU light current electric power system of the present invention; Said very feed circuit comprise the second switch power supply chip, and the mouth of said storage battery converts operating voltage output power supply into through said battery-driven car switch and said second switch power supply chip successively.
The electronlmobil PCU light current electric power system of embodiment of the present invention; Have following beneficial effect: the present invention through adopt normal feed circuit and very feed circuit PCU is provided normal power supply and supplies power very much two kinds of power supply modes; When the battery-driven car switch breaks off, need the partial circuit power supply of work during only to the standby of VCU module, and then guarantee waking up of electronlmobil, also farthest reduced stand-by power consumption; Solved the problem of electronlmobil vehicle length time storage; Have great convenience for the user use, promote the rigid index of electronlmobil, and environmental protection.
Description of drawings
To combine accompanying drawing and embodiment that the present invention is described further below, in the accompanying drawing:
Fig. 1 is the dynamic assembly functional block diagram according to the suitable PCU of electronlmobil PCU light current electric power system of the present invention;
Fig. 2 is the dynamic assembly electric diagram according to the suitable PCU of electronlmobil PCU light current electric power system of the present invention;
Fig. 3 is the functional block diagram according to VCU module among the suitable PCU of electronlmobil PCU light current electric power system of the present invention;
Fig. 4 is the circuit module figure according to the preferred embodiment of electronlmobil PCU light current electric power system of the present invention;
Fig. 5 is the circuit diagram according to switching power source chip in the preferred embodiment of electronlmobil PCU light current electric power system of the present invention;
Fig. 6 is the circuit diagram according to CAN communication interface module in the preferred embodiment of electronlmobil PCU light current electric power system of the present invention.
The specific embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.
The present invention has conceived a kind of electronlmobil PCU light current electric power system; The mouth of storage battery is divided into two-way; The normal feed circuit of leading up to keep continued power to the partial circuit of entire car controller among the PCU (VCU) module; To ensure the normal charged arousal function of VCU module, for example when the battery-driven car standby, still can receive the signal of some switch controlling signals such as battery-driven car switch closure through the DI/DO element circuit; Perhaps receive for example alerting signal, ON shelves signal, charge switch signal etc., in time respond with the MCU that wakes the VCU module up through CAN communication interface circuit.Another road is through unusual feed circuit, when the battery-driven car switch closure, other circuit that need carry out the light current power supply among the remainder circuit of VCU module and the PCU is supplied power, and the battery-driven car switch cuts off power supply when breaking off.Related battery-driven car switch is meant the break-make of the relay of battery-driven car key control among the present invention, key unlocking and the ON/OFF logic of closing the corresponding relay of lock difference.
Following elder generation is introduced the structure of the employed PCU of electronlmobil PCU light current electric power system of the present invention.At first, see also Fig. 1 and Fig. 2, be respectively dynamic assembly functional block diagram and the dynamic assembly electric diagram of the PCU that is suitable for according to electronlmobil PCU light current electric power system of the present invention.As depicted in figs. 1 and 2, PCU 100 comprises VCU module 110, electric machine controller module 120, DC/DC converter module 130 and high voltage power distribution module 140 at least.
Electronlmobil also has electrokinetic cell system 90, motor 80 and storage battery 210.Electrokinetic cell system 90 is as the power source of battery-driven car, for car load provides electric power.
The 140 main transmission of being responsible for the Full Vehicle System dynamic power of high voltage power distribution module.Electrokinetic cell system 90 gives the electric machine controller module 120 power supplies through high voltage power distribution module 140, with drive motor 80 operations.Simultaneously, electrokinetic cell system 90 is 130 power supplies of DC/DC converter module through high voltage power distribution module 140, and DC/DC converter module 130 is changed it and then is storage battery 210 chargings.As shown in Figure 2, can be divided into 3 the tunnel after the electrokinetic cell system 90 process high voltage power distribution modules 140, the first via is 120 power supplies of electric machine controller module, and then drive motor 80 operations.The second the tunnel is 130 power supplies of DC/DC converter module, and then is storage battery 210 chargings.Third Road is the external system power supply, for example is a/c system 71, heater unit system 72, onboard charger 73 and 74 power supplies of non-onboard charger.High voltage power distribution module 140 can also be monitored insulation fault, open circuit fault, earth fault and the high voltage fault etc. of whole high-pressure system at any time, is the critical function module that guarantees car load equipment and personal safety.For example, have insulating monitoring module 142 in the high voltage power distribution module 140, be used for PCU100 is carried out insulating monitoring, produce the insulating monitoring signal and give VCU module 110.
Electric machine controller module 120 mainly receives the work order from VCU module 110 from the CAN bus network, carries out the control corresponding algorithm and comes drive motor to go.Electric machine controller module 120 may further include high-power IGBT module, conv, DSP control chip and electric machine control algorithm etc.
DC/DC converter module 130 is mainly used in and converts high tension supply into low potential source such as 12V and supply power for system zero parts such as the 12V low pressure lead-acid storage battery 210 of car load and other low pressure accessory equipment.Consider the energy optimization management, require DC/DC converter module 130 to possess the adjustable closed loop control function of voltage.
See also Fig. 3, be the functional block diagram of VCU module among the suitable PCU of electronlmobil PCU light current electric power system according to the present invention.As shown in Figure 3, DI/DO element circuit 112, CAN communication interface circuit 114 and AI/AO element circuit 113 that VCU module 110 comprises single-chip minimum system circuit 111 at least and is attached thereto.In addition, be provided with R/G 11 in this VCU module 110, DI/DO element circuit 112 is given the contactless switch group 141 in the high voltage power distribution module 140 through R/G 11 fire switch control signals.
DI/DO element circuit 112 is used to gather the external switch control signal and gives single-chip minimum system circuit 111, for example from the ON of battery-driven car switch or OFF signal etc.Simultaneously, DI/DO element circuit 112 is also exported the switch controlling signal that single-chip minimum system circuit 111 produces, and for example gives the contactless switch group 141 in the aforementioned high voltage power distribution module 140.
AI/AO element circuit 113 is used to gather outside throttle/pedal/terminal signals such as braking and gives single-chip minimum system circuit 111.Simultaneously, AI/AO element circuit 113 is also exported the analog control signal that single-chip minimum system circuit 111 produces and is given each external parts.
Single-chip minimum system circuit 111 is the core of VCU module 110, comprises the MCU power supply, chip and crystal oscillating circuit etc. reset.Single-chip minimum system circuit 111 can be according to the external switch control signal of above-mentioned DI/DO element circuit 112 collections; And the outside throttle/pedal/terminal signals such as braking of AI/AO element circuit 113 collections, produce the control that the battery-driven car control signal is realized the car load operating mode.
See also Fig. 4, be the circuit module figure of the preferred embodiment of electronlmobil PCU light current electric power system according to the present invention.As shown in Figure 4, the electronlmobil PCU light current electric power system that this embodiment provides comprises storage battery 210, normal feed circuit 220 and unusual feed circuit 230.For example, storage battery 210 positive poles can pass through fuse box and supply power to PCU among the present invention, are divided into normal power supply and very power supply at this, and normal power supply is to be realized by above-mentioned normal feed circuit 220, and no matter it all keeps power supply when the battery-driven car switch conduction is still closed.The break-make of supplying power very much through the key control relay realizes that promptly conducting and the closure by the battery-driven car switch decides.
The input end of normal feed circuit 220 links to each other with the mouth of storage battery 210; The mouth of normal feed circuit 220 is connected to single-chip minimum system circuit 111, DI/DO element circuit 112 and the CAN communication interface circuit 114 of VCU module 110 respectively, and it is that operating voltage is output as these and need keeps the alive circuit continued power when the battery-driven car standby that normal feed circuit 220 are used for storage battery 210 voltage transitions.Normal feed circuit 220 among the present invention are only given the partial circuit power supply of the VCU module 100 that need work when the standby through switching power source chip.When the battery-driven car key is OFF; The battery-driven car switch is for breaking off; MCU is in deep sleep state; Yet the single-chip minimum system circuit 111 of VCU module 100, DI/DO element circuit 112 and CAN communication interface circuit 114 still keep power supply, that is to say, can receive some switch controlling signals such as battery-driven car switch closure signals by DI/DO element circuit 112; Perhaps receive for example alerting signal, ON shelves signal and charge switch signal etc., thereby wake MCU work up through CAN communication interface circuit.In addition, the mouth of the normal feed circuit 220 burned download circuit 115 of program that can also be connected to VCU module 100 provides normal power supply for it.
Very the input end of feed circuit 230 links to each other with the mouth of storage battery 210, and very the mouth of feed circuit 230 is connected to AI/AO element circuit 113, electric machine controller module 120, the R/G 116 of VCU module 110 and the contactless switch group 141 of high voltage power distribution module of VCU module 110 respectively.Very feed circuit are used for when the battery-driven car switch conduction, converting battery tension into operating voltage output, when the battery-driven car switch breaks off, turn-off output.Very feed circuit 230 are mainly the drive plate power supply of electric machine controller module 120, so that the operating voltage of light current circuit part to be provided.Very feed circuit 230 among the present invention supply power for not through switching power source chip among partial circuit and the PCU of the VCU module 100 that need work when the standby other circuit that need carry out the light current power supply.And very 230 of feed circuit are supplied power when the battery-driven car switch closure, when the battery-driven car switch breaks off, cut off power supply.In addition, very the mouth of feed circuit 230 can also be connected to the high voltage power distribution module insulating monitoring module 142 for it provides very power supply, only when the battery-driven car switch closure, the light current operating voltage is provided for it.
See also Fig. 5, be the circuit diagram of switching power source chip in the preferred embodiment of electronlmobil PCU light current electric power system according to the present invention.Normal feed circuit 220 among the present invention and very include switching power source chip and peripheral circuit in the feed circuit 230.When concrete the realization, normal feed circuit 220 can comprise first switching power source chip, and the mouth of storage battery 210 directly converts 5V operating voltage output power supply into through first switching power source chip.Very feed circuit 230 can comprise the second switch power supply chip, and the mouth of storage battery 210 converts 5V operating voltage output power supply into through the second switch power supply chip more earlier through the battery-driven car switch.Above-mentioned first switching power source chip and second switch power supply chip all can adopt switching power source chip U1 and peripheral circuit as shown in Figure 5.Switching power source chip U1 preferably adopts the low-power consumption chip among Fig. 5, and for example model is the chip of TPS54140DGQ.Fig. 5 is the example connection diagram of this chip.The voltage input pin VIN of switching power source chip U1 is connected with the 12V of storage battery 210 output, the output pin OUT output 5V operating voltage of circuit.
See also Fig. 6, be the circuit diagram of CAN communication interface module in the preferred embodiment of electronlmobil PCU light current electric power system according to the present invention.As shown in Figure 6, the CAN communication interface module 114 same low-power consumption chip U2 that adopt realize that for example model is the chip of TJA1040.Adopt TJA1040 that the standby mode of a special use is provided in the present embodiment; Current draw reduces to minimum in this pattern; Maximum < 15 μ A; Special-purpose low-power consumption receptor has guaranteed to carry out through bus the function of Remote Wake Up, and no matter TJA1040 transmitter in standby mode is the signal on the pin TXD, forbidden energy fully.TJA1040 provides mute function to tackle Babbling Idiot node like this, and TJA1040 bus under this pattern is moved pin GND to, so the current draw of TJA1040 under the low-power consumption working environment can be very low.
Power consumption actual measurement when the standby obtains the chip that comprehensive the foregoing description adopts to electronlmobil PCU light current electric power system of the present invention; Switching power source chip U1 is that TPS54140DGQ is 2mA; The single-chip minimum system circuit is 4mA; DI/DO element circuit 112 is tens microamperes can be ignored, and CAN communication interface circuit is that TJA1040 is: maximum < 15 μ A.Therefore calculate the total power consumption < 6mA (12V) that obtains.Its stand-by power consumption of conventional electric automobile 50mA, and the stand-by power consumption that power supply provided by the invention designs electronlmobil is reduced to < 6mA (12V).Therefore, the invention solves the problem that the electronlmobil vehicle length time stores, have great convenience for the user use, promote the rigid index of electronlmobil, and environmental protection.
The present invention describes according to specific embodiment, but it will be understood by those skilled in the art that when not breaking away from the scope of the invention, can carry out various variations and be equal to replacement.In addition, for adapting to the specific occasion or the material of the present invention's technology, can carry out many modifications and not break away from its protection domain the present invention.Therefore, the present invention is not limited to specific embodiment disclosed herein, and comprises that all drop into the embodiment of claim protection domain.
Claims (5)
1. electronlmobil PCU light current electric power system, said PCU comprises VCU module, electric machine controller module, DC/DC converter module and high voltage power distribution module at least; Said VCU module comprises single-chip minimum system circuit, DI/DO element circuit, CAN communication interface circuit, AI/AO element circuit and R/G at least; Said high voltage power distribution module has the contactless switch group;
It is characterized in that said electronlmobil PCU light current electric power system comprises storage battery, normal feed circuit and unusual feed circuit;
The input end of said normal feed circuit links to each other with the mouth of said storage battery, and the mouth of said normal feed circuit is connected to single-chip minimum system circuit, DI/DO element circuit and the CAN communication interface circuit of said VCU module respectively; Said normal feed circuit are used for converting said battery tension into operating voltage output;
The input end of said very feed circuit links to each other with the mouth of said storage battery, and the mouth of said very feed circuit is connected to the R/G of the AI/AO element circuit of said VCU module, said electric machine controller module, said VCU module and the contactless switch group of said high voltage power distribution module respectively; Said very feed circuit are used for when the battery-driven car switch conduction, converting said battery tension into operating voltage output, when the battery-driven car switch breaks off, turn-off output.
2. electronlmobil PCU light current electric power system according to claim 1; It is characterized in that; Said VCU module also comprises the burned download circuit of program with the communication of said single-chip minimum system circuit, and the mouth of said normal feed circuit also is connected to the burned download circuit of program of said VCU module.
3. electronlmobil PCU light current electric power system according to claim 1 is characterized in that said high voltage power distribution module also has the insulating monitoring module, and the mouth of said very feed circuit also is connected to said insulating monitoring module.
4. electronlmobil PCU light current electric power system according to claim 1 is characterized in that said normal feed circuit comprise first switching power source chip, and the mouth of said storage battery converts operating voltage output power supply into through said first switching power source chip.
5. electronlmobil PCU light current electric power system according to claim 1; It is characterized in that; Said very feed circuit comprise the second switch power supply chip, and the mouth of said storage battery converts operating voltage output power supply into through said battery-driven car switch and said second switch power supply chip successively.
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| CN102929271A (en) * | 2012-10-31 | 2013-02-13 | 苏州汇川技术有限公司 | Electric accounting machine (EAM) system and method for electromobile power control system assembly |
| CN104245393A (en) * | 2012-04-13 | 2014-12-24 | 通用电气公司 | Method and system for powering a vehicle |
| CN104691349A (en) * | 2015-02-16 | 2015-06-10 | 北京新能源汽车股份有限公司 | Discharging device for residual power of high-voltage part of electric car |
| CN104691350A (en) * | 2015-02-16 | 2015-06-10 | 北京新能源汽车股份有限公司 | Discharging device for residual power of high-voltage part of electric car |
| CN104723892A (en) * | 2013-12-20 | 2015-06-24 | 北京基业达电气有限公司 | Electric drive system of electric vehicle |
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| CN109391136A (en) * | 2017-08-02 | 2019-02-26 | 郑州宇通客车股份有限公司 | A kind of DC/DC converter wakes up system, vehicle low-voltage power supply system and vehicle |
| CN109391136B (en) * | 2017-08-02 | 2023-11-17 | 宇通客车股份有限公司 | DC/DC converter awakening system, vehicle low-voltage power supply system and vehicle |
| CN107640030A (en) * | 2017-08-07 | 2018-01-30 | 北京长城华冠汽车科技股份有限公司 | Reduce the method and device of pure electric automobile low tension battery capacity |
| CN107640030B (en) * | 2017-08-07 | 2020-02-04 | 北京长城华冠汽车科技股份有限公司 | Method and device for reducing capacity of low-voltage storage battery of pure electric vehicle |
| CN109017314A (en) * | 2018-08-21 | 2018-12-18 | 阳光电源（上海）有限公司 | A kind of power-supply management system and control method based on electric machine controller |
| CN109017314B (en) * | 2018-08-21 | 2022-04-26 | 阳光电源（上海）有限公司 | Power management system based on motor controller and control method |
| CN113890362A (en) * | 2020-07-04 | 2022-01-04 | 宁德时代新能源科技股份有限公司 | Auxiliary source control circuit, DC/DC converter, and whole vehicle control system and method |
| CN113890362B (en) * | 2020-07-04 | 2024-03-26 | 宁德时代新能源科技股份有限公司 | Auxiliary source control circuit, DC/DC converter, whole vehicle control system and method |
| CN112721636A (en) * | 2021-01-20 | 2021-04-30 | 中通客车股份有限公司 | Electric motor coach power supply system, electric motor coach and method |
| CN112721636B (en) * | 2021-01-20 | 2022-06-10 | 中通客车股份有限公司 | Electric motor coach power supply system, electric motor coach and method |
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