CN204376470U - A kind of electric vehicle alternating-current charging interface automatic identification device - Google Patents
A kind of electric vehicle alternating-current charging interface automatic identification device Download PDFInfo
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- CN204376470U CN204376470U CN201520033472.7U CN201520033472U CN204376470U CN 204376470 U CN204376470 U CN 204376470U CN 201520033472 U CN201520033472 U CN 201520033472U CN 204376470 U CN204376470 U CN 204376470U
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Abstract
The utility model discloses a kind of electric vehicle alternating-current charging interface automatic identification device, relate to electric automobile field, described device comprises: three alignment detection circuits that detect of the alternating current from charging pile charging inlet be used for access, and its three inputs connect three alternating current terminals of alternating-current charging interface respectively; Be used for according to the decision circuitry of testing result identification alternating current charging interface, its input connects three outputs of described three alignment detection circuits, and its output connects Vehicular charger.The utility model can identify that alternating current charging interface is three-phase or single-phase alternating current charging inlet automatically, to charge to battery according to three-phase or single-phase alternating current charge mode, thus improves charge efficiency.
Description
Technical field
The utility model relates to electric automobile field, particularly a kind of electric vehicle alternating-current charging interface automatic identification device.
Background technology
" GB/T20234.2-2011 electric car conduction chargeable connection device part 2: alternating-current charging interface " defines the alternating-current charging interface of electric car conduction charging, its rated voltage is no more than 440V (AC), frequency 50Hz, rated current is no more than 32A (AC), in the definition of its charging inlet, L and N represents alternating current respectively, belong to two-phase alternating current, simultaneously reserved 1 (NC1) for subsequent use and 2 (NC2) for subsequent use.
The charging pile of current use is based on single-phase alternating current, in order to improve charge power and efficiency, more and more three-phase electricity of 380V that uses is to charging electric vehicle, " GB/T20234.2-2011 electric car conduction chargeable connection device part 2: alternating-current charging interface " charging inlet has had more abundant definition, enables other two inputs of 1 (NC1) for subsequent use and 2 (NC2) for subsequent use as three-phase alternating current.
Therefore, the vehicle-mounted charger of electric automobile must also can identify by these two kinds of charging modes of simultaneous adaptation automatically, or by car owner as required from main separation.
Utility model content
The purpose of this utility model is to provide a kind of electric vehicle alternating-current charging interface automatic identification device, can solve the automatic recognition problem of alternating current charging interface better.
According to an aspect of the present utility model, provide a kind of electric vehicle alternating-current charging interface automatic identification device, comprising:
Three alignment detection circuits that detect of the alternating current from charging pile charging inlet be used for access, its three inputs connect three alternating current terminals of alternating-current charging interface respectively;
Be used for according to the decision circuitry of testing result identification alternating current charging interface, its input connects three outputs of described three alignment detection circuits, and its output connects Vehicular charger.
Preferably, in described three alignment detection circuits, every alignment detection circuit comprises:
First divider resistance and the second divider resistance;
First input resistance, its one end connects alternating current terminals of charging pile charging inlet;
First photoelectrical coupler, an one input connects the other end of described first input resistance, another input end grounding;
First comparator, its normal phase input end connects the output of described first photoelectrical coupler, and its negative input connects the first working power via the first divider resistance, and via the second divider resistance ground connection, its output exports a road detection signal.
Preferably, described decision circuitry comprises:
First resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the first electric capacity;
First triode, its base stage connects three outputs of described three alignment detection circuits, grounded emitter, and collector electrode connects one end of the first resistance;
Second triode, its base stage connects the other end of described first resistance, and emitter connects the first working power via the second resistance;
3rd comparator, its positive connects the first working power via the first divider resistance, and via the second divider resistance ground connection, inverting input connects the collector electrode of described second triode, and via the parallel circuits ground connection that the 3rd resistance and the first electric capacity are formed;
3rd photoelectrical coupler, its first input end connects the first working power by the 4th resistance, and the second input connects the output of described 3rd comparator, and connects the first working power by the 5th resistance, first output connects the second working power, and the second output connects Vehicular charger.
Preferably, in described three alignment detection circuits, every alignment detection circuit comprises:
3rd divider resistance and the 4th divider resistance;
Second input resistance, its one end connects alternating current terminals of charging pile charging inlet;
Second photoelectrical coupler, an one input connects the other end of described second input resistance, another input end grounding;
Second comparator, its negative-phase input connects the output of described second photoelectrical coupler, and its positive input connects the second working power via the 3rd divider resistance, and via the 4th divider resistance ground connection, its output exports a road detection signal.
Preferably, described decision circuitry comprises:
Processor, its three inputs connect three outputs of described three alignment detection circuits respectively, and its output connects Vehicular charger.
Preferably, described processor is single-chip microcomputer or programmable logic array.
Compared with prior art, the beneficial effects of the utility model are:
The utility model can identify that alternating current charging interface is three-phase or single-phase alternating current charging inlet automatically, to charge to battery according to three-phase or single-phase alternating current charge mode, thus improves charge efficiency.
Accompanying drawing explanation
Fig. 1 is the electric vehicle alternating-current charging interface automatic identification device structured flowchart that the utility model embodiment provides;
Fig. 2 is charging pile three-phase/single-phase alternating current charging inlet definition schematic diagram that the utility model embodiment provides;
Fig. 3 is the power supply interface electrical connection interface schematic diagram that the utility model embodiment provides;
Fig. 4 is the first automatic identification circuit figure that the utility model embodiment provides;
Fig. 5 is three-phase alternating current that the utility model embodiment provides voltage oscillogram when normally working;
Fig. 6 is single-phase alternating current that the utility model embodiment provides voltage oscillogram when normally working;
Fig. 7 is the second automatic identification circuit figure that the utility model embodiment provides.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, should be appreciated that following illustrated preferred embodiment is only for instruction and explanation of the utility model, and be not used in restriction the utility model.
Fig. 1 is the electric vehicle alternating-current charging interface automatic identification device structured flowchart that the utility model embodiment provides, as shown in Figure 1, comprise: three alignment detection circuits that detect of the alternating current from charging pile charging inlet be used for access, be used for according to the decision circuitry of testing result identification alternating current charging interface.
Three alignment detection circuits, comprise first via testing circuit, the second alignment detection circuit and the 3rd alignment detection circuit, and the input of three alignment detection circuits connects three alternating current terminals of alternating-current charging interface respectively.
Decision circuitry, its input connects three outputs of described three alignment detection circuits, and its output connects Vehicular charger.
Particularly, every alignment detection circuit comprises: the first divider resistance and the second divider resistance; First input resistance, its one end connects alternating current terminals of charging pile charging inlet; First photoelectrical coupler, an one input connects the other end of described first input resistance, another input end grounding; First comparator, its normal phase input end connects the output of described first photoelectrical coupler, and its negative input connects the first working power via the first divider resistance, and via the second divider resistance ground connection, its output exports a road detection signal.Now, described decision circuitry comprises: the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the first electric capacity; First triode, its base stage connects three outputs of described three alignment detection circuits, grounded emitter, and collector electrode connects one end of the first resistance; Second triode, its base stage connects the other end of described first resistance, and emitter connects the first working power via the second resistance; 3rd comparator, its positive connects the first working power via the first divider resistance, and via the second divider resistance ground connection, inverting input connects the collector electrode of described second triode, and via the parallel circuits ground connection that the 3rd resistance and the first electric capacity are formed; 3rd photoelectrical coupler, its first input end connects the first working power by the 4th resistance, and the second input connects the output of described 3rd comparator, and connects the first working power by the 5th resistance, first output connects the second working power, and the second output connects Vehicular charger.Or described decision circuitry comprises processor, this processor accesses the three road detection signals that three alignment detection circuits export respectively, and exports judgement result to Vehicular charger.
Or in described three alignment detection circuits, every alignment detection circuit comprises: the 3rd divider resistance and the 4th divider resistance; Second input resistance, its one end connects alternating current terminals of charging pile charging inlet; Second photoelectrical coupler, an one input connects the other end of described second input resistance, another input end grounding; Second comparator, its negative-phase input connects the output of described second photoelectrical coupler, and its positive input connects the second working power via the 3rd divider resistance, and via the 4th divider resistance ground connection, its output exports a road detection signal.Now, described decision circuitry comprises processor, and its three inputs connect three outputs of described three alignment detection circuits respectively, and its output connects Vehicular charger.Described processor is single-chip microcomputer or programmable logic array.
According to " GB/T20234.2-2011 electric car conduction chargeable connection device part 2: alternating-current charging interface ", charging inlet definition is clearly defined in the present invention, thus when not changing the mechanical structure of charging inlet just can completely compatibility above two standards to the regulation of charging inlet.Fig. 2 is charging pile three-phase/single-phase alternating current interface definition schematic diagram that the embodiment of the present invention provides, Fig. 3 is the power supply interface electrical connection interface schematic diagram that the embodiment of the present invention provides, the definition of charging pile unified interface as shown in Figures 2 and 3, according to charging pile interface definition, if use single-phase alternating current to charge, use interface 1-AC power (L), 4-center line (N), 5-equipment ground (PE), 6-charging wire connects confirmation (CC), and 7-controls to confirm (CP); If use three-phase alternating current charging, use interface 1-AC power L1,2-AC power L2,3-AC power L3,5-equipment ground (PE), the connection of 6-charging wire confirms (CC), and 7-controls to confirm (CP).According to above interface definition, the present embodiment is the first automatic identification circuit, as shown in Figure 4, comprises three alignment detection circuits and decision circuitry.
Three alignment detection circuits comprise first via testing circuit, the second alignment detection circuit and the 3rd alignment detection circuit.Wherein, first via testing circuit comprises: divider resistance R7 and R8; Input resistance R1, its one end connects first alternating current terminals of charging pile charging inlet; Photoelectrical coupler D1, its input connects the other end of R1; Comparator U1A, its normal phase input end connects the output of D1, and connects+12V working power by resistance R4, and its inverting input connects+12V working power via R7, and via R8 ground connection, its output exports a road detection signal Ud1.Second alignment detection circuit comprises: R7 and R8; Input resistance R2, its one end connects second alternating current terminals of charging pile charging inlet; Photoelectrical coupler D2, its input connects the other end of R2; Comparator U1B, its normal phase input end connects the output of D2, and connects+12V working power by resistance R5, and its inverting input connects+12V working power via R7, and via R8 ground connection, its output exports a road detection signal Ud2.3rd alignment detection circuit comprises: R7 and R8; R3, its one end connects the 3rd alternating current terminals of charging pile charging inlet; Photoelectrical coupler D3, its input connects the other end of R3; Comparator U1C, its normal phase input end connects the output of D3, and connects+12V working power by resistance R5, and its inverting input connects+12V working power via R7, and via R8 ground connection, its output exports a road detection signal Ud3.
Decision circuitry comprises: triode Q2, and its base stage connects the output of U1A, U1B, U1C, one end of collector electrode contact resistance R13, grounded emitter; Triode Q1, its base stage connects the other end of R13, and emitter connects+12V working power via resistance R10; Comparator U1D, its normal phase input end connects+12V working power via R7, and via R8 ground connection, its inverting input connects the collector electrode of Q1, and the parallel circuits ground connection by being formed by electric capacity C3 and resistance R14; Photoelectrical coupler D7, its first input end connects+12V working power via resistance R12, and its second input connects the output of U1D, and connects+12V working power via resistance R11, its first output connects+5V power supply, and the second output (FLAG) connects Vehicular charger; The anode of diode D4 and D5 of series winding, D4 connects+12V working power, and the negative electrode of D5 connects the base stage of Q1; Diode D6, its negative electrode connects+12V working power, and its anode connects the collector electrode of Q1.
Fig. 5 is three-phase alternating current that the embodiment of the present invention provides voltage oscillogram when normally working, as shown in Figure 5, in any one power cycle, the photoelectrical coupler conducting that a phase input phase voltage ensures in three alignment detection circuits is had at least in three-phase input phase voltage, the rare road detection signal that exports to of three alignment detection circuits is made to export as low level signal, therefore, the signal of three tunnel signal lines and rear input decision circuitry is low level signal, makes the output of decision circuitry be always low level signal.Specifically, when charging pile is three-phase alternating current input voltage, three-phase input phase voltage waveform as shown in Figure 5, supposes the corresponding U of L1
a, the corresponding U of L2
b, the corresponding U of L3
c, for ease of analyzing, a power cycle is divided into 6 equal portions, T1, T2, T3, T4, T5, T6 as shown in Figure 5.In these six intervals, the relation between three phase mains is as shown in table 1.In interval T1, U
a>U
c>U
ba phase voltage is maximum and be just always, therefore, photoelectrical coupler D1 conducting in the diagram, Ua is low level, and LM339 (U1A) _ 5=Ua is low level, LM339 (U1A) _ 4=12*2.4/ (2.4+5.6)=3.6V, therefore comparator LM339 (U1A) _ 2 exports as logic low, and namely Ud1 is low level; In T1 interval, B phase voltage is minimum and be negative always, photoelectrical coupler D2 in Fig. 4 is in not on-state always, Ub is high level, LM339 (U1B) _ 7=Ub is high level, LM339 (U1B) _ 6=LM339 (U1A) _ 4=3.6V, LM339 (U1B) _ 1 exports as logic high, and namely Ud2 is high level; In T1 interval, C phase voltage have just have negative, concrete analysis process and A phase and B similar, visible Uc exports in T1 interval has high level also to have low level, and then show that LM339 (U1C) _ 14 exports existing high level and also has low level, namely Ud3 exports existing high level also has low level.Ud point is line and connected mode, i.e. Ud=Ud1 & Ud2 & Ud3, therefore in T1 interval, control signal Ud is low level always, Q2 cut-off thus, causes again Q1 to end, and Uf=LM339 (U1D) _ 10 is low level input, Ue=LM339 (U1D) _ 11=3.6V, Ue=LM339 (U1D) _ 13 exports as high level, and namely Ug exports as high level, photoelectrical coupler D7 not conducting, export as low level, i.e. FLAG=0.That is, in whole T1 interval, FLAG=0 (low level).By that analogy, in T2, T3, T4, T5, T6 interval, FLAG=0.Therefore, in a power cycle, when three-phase input voltage normally works, U
dbe low level, FLAG signal is low level always always, and represent that charging pile is powered by three-phase alternating current, alternating-current charging interface is three-phase alternating current charging inlet.
Relation between table 1 three phase mains
Fig. 6 is single-phase alternating current that the embodiment of the present invention provides voltage oscillogram when normally working, and as shown in Figure 6, when charging pile is single-phase input voltage, phase voltage only has U
aone phase, works as U
afor timing, the photoelectrical coupler D1 conducting in Fig. 4, all the other two-phase electricity are input as 0, therefore all the other two photoelectrical coupler D2 and D3 not conductings, now, Ud1 is low level, Ud2 and Ud3 is high level, and according to line and calculating, Ud is low level, Q2 cut-off thus, causes again Q1 to end, and Uf=LM339 (U1D) _ 10 is low level input, Ue=LM339 (U1A) _ 11=3.6V, Ug exports as high level, photoelectrical coupler D7 not conducting, FLAG=0.Work as U
afor time negative, photoelectrical coupler D1 not conducting, all the other two-phase electricity are input as 0, therefore all the other two photoelectrical coupler D2 and D3 not conductings, now Ud1, Ud2 and Ud3 are high level, according to line and calculating, Ud is high level, Q2 conducting thus, causes again Q1 conducting, and Uf=LM339 (U1D) _ 10 is high level input, Ue=LM339 (U1D) _ 11=3.6V, Ug=LM339 (U1D) _ 13 exports as low level, photoelectrical coupler D7 conducting, FLAG=5V (high level).In whole power cycle, as shown in Figure 6, FLAG signal shows as the PWM ripple with certain duty ratio to FLAG waveform.Can judge that charging pile is powered by single-phase alternating current thus, alternating-current charging interface is single-phase alternating current charging inlet.
According to the performance of FLAG signal, Vehicular charger judges that charging pile is that three-phase alternating current is powered or single-phase alternating current is powered, thus adopt corresponding charging circuit to be battery charging according to judged result.
Fig. 7 is the second automatic identification circuit figure that the embodiment of the present invention provides, and as shown in Figure 7, comprises three alignment detection circuits and decision circuitry.
Three alignment detection circuits comprise first via testing circuit, the second alignment detection circuit and the 3rd alignment detection circuit.Wherein, first via testing circuit comprises: divider resistance R7 and R8; Input resistance R1, its one end connects first alternating current terminals of charging pile charging inlet; Photoelectrical coupler D1, its input connects the other end of R1; Comparator U1A, its inverting input connects the output of D1, and connects+12V working power by resistance R4, and its normal phase input end connects+12V working power via R7, and via R8 ground connection, its output exports a road detection signal Ud1.Second alignment detection circuit comprises: R7 and R8; Input resistance R2, its one end connects second alternating current terminals of charging pile charging inlet; Photoelectrical coupler D2, its input connects the other end of R2; Comparator U1B, its inverting input connects the output of D2, and connects+12V working power by resistance R5, and its normal phase input end connects+12V working power via R7, and via R8 ground connection, its output exports a road detection signal Ud2.3rd alignment detection circuit comprises: R7 and R8; R3, its one end connects the 3rd alternating current terminals of charging pile charging inlet; Photoelectrical coupler D3, its input connects the other end of R3; Comparator U1C, its inverting input connects the output of D3, and connects+12V working power by resistance R5, and its normal phase input end connects+12V working power via R7, and via R8 ground connection, its output exports a road detection signal Ud3.
Decision circuitry comprises: comprise processor, and this processor accesses the three road detection signals that three alignment detection circuits export respectively, and exports judgement result to Vehicular charger.
As shown in Figure 5, in any one power cycle, all the time have in three-phase input phase voltage one or two-phase input phase voltage ensure in three alignment detection circuits of Fig. 7 one or two photoelectrical coupler conductings, make three alignment detection circuits export a rare road to or two road detection signals export as high level signal, namely three road detection signals can not be high level signal or be low level signal, now, processor judges that charging pile adopts three-phase alternating current to power, and alternating-current charging interface is three-phase alternating current charging inlet.
As shown in Figure 6, when charging pile is single-phase input voltage, phase voltage only has U
aone phase, works as U
afor timing, the D1 of photoelectrical coupler shown in Fig. 7 conducting, all the other two-phase electricity are input as 0, therefore all the other two photoelectrical coupler D2 and D3 not conductings, and now, Ud1 is low level, Ud2 and Ud3 is high level.But work as U
afor time negative, photoelectrical coupler D1 not conducting, all the other two-phase electricity are input as 0, therefore all the other two photoelectrical coupler D2 and D3 not conductings, now Ud1, Ud2 and Ud3 are low level, namely within the front/rear half period of a power cycle, described three road detection signals are low level signal, now, processor judges that charging pile adopts single-phase alternating current to power, and alternating-current charging interface is single-phase alternating current charging inlet.
Above-mentioned processor can be single-chip microcomputer, also can be programmable logic array etc.
In sum, the utility model has following technique effect:
The utility model motor vehicle can be helped automatically to identify charging pile uses three-phase alternating current or single-phase alternating current, thus adopt corresponding charging circuit to be battery charging, improve charge efficiency.
Although be described in detail the utility model above, the utility model has been not limited thereto, and those skilled in the art of the present technique can carry out various amendment according to principle of the present utility model.Therefore, all amendments done according to the utility model principle, all should be understood to fall into protection range of the present utility model.
Claims (6)
1. an electric vehicle alternating-current charging interface automatic identification device, is characterized in that, comprising:
Three alignment detection circuits that detect of the alternating current from charging pile charging inlet be used for access, its three inputs connect three alternating current terminals of alternating-current charging interface respectively;
Be used for according to the decision circuitry of testing result identification alternating current charging interface, its input connects three outputs of described three alignment detection circuits, and its output connects Vehicular charger.
2. device according to claim 1, is characterized in that, in described three alignment detection circuits, every alignment detection circuit comprises:
First divider resistance and the second divider resistance;
First input resistance, its one end connects alternating current terminals of charging pile charging inlet;
First photoelectrical coupler, an one input connects the other end of described first input resistance, another input end grounding;
First comparator, its normal phase input end connects the output of described first photoelectrical coupler, and its negative input connects the first working power via the first divider resistance, and via the second divider resistance ground connection, its output exports a road detection signal.
3. device according to claim 2, is characterized in that, described decision circuitry comprises:
First resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the first electric capacity;
First triode, its base stage connects three outputs of described three alignment detection circuits, grounded emitter, and collector electrode connects one end of the first resistance;
Second triode, its base stage connects the other end of described first resistance, and emitter connects the first working power via the second resistance;
3rd comparator, its positive connects the first working power via the first divider resistance, and via the second divider resistance ground connection, inverting input connects the collector electrode of described second triode, and via the parallel circuits ground connection that the 3rd resistance and the first electric capacity are formed;
3rd photoelectrical coupler, its first input end connects the first working power by the 4th resistance, and the second input connects the output of described 3rd comparator, and connects the first working power by the 5th resistance, first output connects the second working power, and the second output connects Vehicular charger.
4. device according to claim 1, is characterized in that, in described three alignment detection circuits, every alignment detection circuit comprises:
3rd divider resistance and the 4th divider resistance;
Second input resistance, its one end connects alternating current terminals of charging pile charging inlet;
Second photoelectrical coupler, an one input connects the other end of described second input resistance, another input end grounding;
Second comparator, its negative-phase input connects the output of described second photoelectrical coupler, and its positive input connects the second working power via the 3rd divider resistance, and via the 4th divider resistance ground connection, its output exports a road detection signal.
5. the device according to claim 2 or 4, is characterized in that, described decision circuitry comprises:
Processor, its three inputs connect three outputs of described three alignment detection circuits respectively, and its output connects Vehicular charger.
6. device according to claim 5, is characterized in that, described processor is single-chip microcomputer or programmable logic array.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110077236A (en) * | 2019-05-24 | 2019-08-02 | 苏州同捷汽车工程技术股份有限公司 | A kind of high power vehicular charger integrates three-in-one complete machine |
| DE102018111403A1 (en) * | 2018-05-14 | 2019-11-14 | Webasto SE | Method for operating a charging device and charging device for charging an energy storage device for electric vehicles |
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2015
- 2015-01-16 CN CN201520033472.7U patent/CN204376470U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018111403A1 (en) * | 2018-05-14 | 2019-11-14 | Webasto SE | Method for operating a charging device and charging device for charging an energy storage device for electric vehicles |
| CN112105523A (en) * | 2018-05-14 | 2020-12-18 | 韦巴斯托股份公司 | Method for operating a charging device and charging device for charging an energy store of an electric vehicle |
| CN110077236A (en) * | 2019-05-24 | 2019-08-02 | 苏州同捷汽车工程技术股份有限公司 | A kind of high power vehicular charger integrates three-in-one complete machine |
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