CN104184193A - Charging pile control guide and plug detection logic circuit and test device thereof - Google Patents
Charging pile control guide and plug detection logic circuit and test device thereof Download PDFInfo
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- CN104184193A CN104184193A CN201410437839.1A CN201410437839A CN104184193A CN 104184193 A CN104184193 A CN 104184193A CN 201410437839 A CN201410437839 A CN 201410437839A CN 104184193 A CN104184193 A CN 104184193A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
A charging pile control guide and plug detection logic circuit comprises a controller, the controller is connected with a PWM generation circuit, the -12V voltage output end of a 12V voltage generation circuit is connected with the -12V voltage control end of the PWM generation circuit, +12V voltage output end of the 12V voltage generation circuit is connected with the +12V voltage control end of the PWM generation circuit, and the input end of a signal collection circuit is connected with the output end of the PWM generation circuit. By the adoption of the structure, the control guide and plug detection logic circuit is arranged in a charging pile circuit, the control guide and plug detection logic circuit can be matched to detect whether a charging cable is correctly connected with an electric automobile or not, when the charging cable is correctly connected with the electric automobile, a charging pile is started to be charged, the charging accident caused by charging of the charging pile under the condition that the charging pile is not correctly connected with the cable is avoided, and the potential safety hazard is eliminated.
Description
Technical field:
The present invention relates to a kind of charging pile control guiding and plug and detect logical circuit and testing apparatus thereof.
Background technology:
Along with low-carbon economy becomes the theme of China's economic development, electric automobile is as the important component part of new forms of energy strategy and intelligent grid, will become the emphasis that Chinese Automobile Industry ' and energy industry develop from now on.Ev industry is a systematic engineering of business, and charging system for electric automobile is one of its key link.
At present, owing to there being on the market the charge cable of Multiple Type, and the decision circuitry not matching with it in charging pile circuit, therefore in the process of charging, there are many problems: 1, charging gun on charging pile is after being connected with electric automobile, whether electric automobile can detect exact connect ion automatically, if not exact connect ion, electric motor car can not accepted electric energy, but now charging pile circuit cannot judge charging gun whether with electric automobile exact connect ion, if charging pile is just opened charging in the situation that cable is failed with charging pile exact connect ion, easily cause charging accident, as there will be Arcing phenomenon between charging gun and the charging inlet of electric automobile, there is potential safety hazard, 2, in the time that the charging gun of charging pile is connected with electric automobile, the charging current notice electric automobile that charging pile circuit cannot provide charging pile, electric automobile charges in the case of the electric current that cannot learn charging pile and can provide, if the electric current that charging pile provides is greater than the specified charging current of electric automobile, in charging process, can cause damage to electric automobile.
Summary of the invention:
The invention provides a kind of charging pile control guiding and plug and detect logical circuit and testing apparatus thereof, its reasonable in design, in charging pile circuit, arrange and control guiding and plug detection logical circuit, whether control guiding and plug detection logical circuit can cooperatively interact and detect charge cable and be connected with electric automobile correctly, when charging pile after exact connect ion is opened charging again, avoid charging pile just to charge and cause charging accident not being connected with cable correct in the situation that, eliminated potential safety hazard; In addition, control guiding and plug and detect the charging current notice electric motor car that logical circuit can provide charging pile by the form of pwm pulse, if the charging current that charging pile provides is excessive, electric automobile is not just accepted charging, avoid electric automobile to accept excessive electric current the battery of electric automobile has been caused to damage, avoid the generation of security incident, solved problems of the prior art.
The present invention for solving the problems of the technologies described above adopted technical scheme is:
A kind of charging pile control guiding and plug detect logical circuit, comprise a controller, controller produces circuit with a PWM and is connected, one 12V voltage generation circuit-12V voltage output end and PWM produce circuit-12V voltage controling end is connected, 12V voltage generation circuit+12V voltage output end and PWM produce circuit+12V voltage controling end is connected, the input of one signal acquisition circuit is connected with the output that PWM produces circuit, controller is connected with the output of signal acquisition circuit, the input of one cable capacity testing circuit is connected with charging cable, controller is connected with the output of cable capacity testing circuit, the pwm signal of cable capacity testing circuit forwards end and is connected with the PWM generation output of circuit and the CP signal receiving end of charging gun respectively.
Described controller is STM32F103VET6_1 control chip, the CPPWM pin of controller is connected with the input that PWM produces circuit, the CPAD pin of controller is connected with the output of signal acquisition circuit, and the CCAD pin of controller is connected with the output of cable capacity testing circuit.
Described 12V voltage generation circuit comprises a 12V voltage generation circuit control chip, between the VIN pin of 12V voltage generation circuit control chip and EN pin, be connected with resistance R 7, VIN pin is connected with the capacitor C 31 of ground connection, between VIN pin and SW pin, be connected with inductance L 5, VIN pin, resistance R 7 are all connected with 5V power supply with the link of VIN pin with inductance L 5 with the link of VIN pin with link, the capacitor C 31 of VIN pin, the SW pin of 12V voltage generation circuit control chip is connected with a parallel connected end of double diode D4 in parallel and double diode D5, on double diode D4 branch road by No. 3 pins of the double diode D4 capacitor C 25 of connecting, on the branch road of double diode D5 by No. 3 pins of the double diode D5 capacitor C 30 of connecting, one parallel end connection ground of resistance R 5, capacitor C 27 and the capacitor C 28 after parallel connection, the other end is connected with No. 1 pin of double diode D4, it is-output of 12V voltage, and No. 2 pin ground connection of double diode D4 arrange, No. 1 pin ground connection of double diode D5 arranges, a parallel connected end of resistance R 6 and No. 2 pins of double diode D5 that capacitor C 32 in parallel is 432k Ω with resistance are connected, it is+output of 12V voltage, the other end is connected with the FB pin of 12V voltage generation circuit control chip, the resistance R 8 that capacitor C 32 after parallel connection is 49.9k Ω with the resistance R 6 that resistance is 432k Ω with a resistance is connected with the GND pin of 12V voltage generation circuit control chip after connecting, between No. 2 pins of double diode D5 and the GND pin of 12V voltage generation circuit control chip, be connected with capacitor C in parallel 33 and capacitor C 34, the GND pin of 12V voltage generation circuit control chip, resistance is the resistance R 8 and GND pin link of 49.9k Ω, resistance is the resistance R 6 and GND pin link and capacitor C 33 and the equal ground connection of GND pin link of 432k Ω.
Described PWM produces circuit and comprises that a PWM produces circuit control chip, the VF-pin that PWM produces circuit control chip is connected with the CPPWM pin of controller, VF+ pin is connected with power supply after being connected with a resistance R 30, between VCC pin and GND pin, be in series with capacitor C 45, the link of capacitor C 45 and GND pin and GND pin and 12V voltage generation circuit-12V output is connected, between VCC pin and VO pin, be connected with resistance R parallel with one another 32 and resistance R 33, VCC pin, the link of resistance R 32 and VCC pin, the link of the link of resistance R 33 and VCC pin and capacitor C 45 and VCC pin all with 12V voltage generation circuit+12V output is connected, on VO pin, be connected with NPN triode Q3 parallel with one another and PNP triode Q5, the collector electrode of NPN triode Q3 and 12V voltage generation circuit+12V output is connected, the collector electrode of PNP triode Q5 and 12V voltage generation circuit-12V output is connected, the emitter of the NPN triode Q3 resistance R 35 of connecting after being connected with the emitter of PNP triode Q5, the other end of resistance R 35 is the output that PWM produces circuit.
Described cable capacity testing circuit comprises a resistance R 45, one end of resistance R 45 and resistance R 46 are in series, another termination 5V voltage of resistance R 45, between R45 and R46, connect one or two binding post, No. 1 binding post of two binding posts is that pwm signal forwards end, the CP signal receiving end that No. 1 binding post produces by wire and PWM on output and the charging gun of circuit is connected, and No. 2 binding posts of two binding posts are connected with CCAD pin and the charge cable of controller by wire.
A kind of charging pile control guiding and plug detect the testing apparatus of logical circuit, comprise the charge cable analog module and the Control of Electric Vehicles guiding analog module that are connected with ground wire by holding wire, the signal input part of charge cable analog module is connected with the pwm signal forwarding end that charging pile control guiding and plug detect logical circuit, described charge cable analog module is for simulating the charge cable of different size, Control of Electric Vehicles guiding analog module is used for simulating the different responsive states of Control of Electric Vehicles guiding module, the signal receiving by test Control of Electric Vehicles guiding module, whether normally judge that charging pile control guidance circuit and plug detect logical circuit.
Described charge cable analog module comprises a PCB binding post of one or three joints and the 2nd PCB binding post of one or two joints, the signal input connector that No. 1 joint of the one PCB binding post is charge cable analog module, between No. 1 joint of a PCB binding post and No. 1 joint of the 2nd PCB binding post, be connected a holding wire, between No. 2 joints of the one PCB binding post and No. 2 joints of the 2nd PCB binding post, be connected a ground wire, between holding wire and ground wire, be provided with the switch of often opening 1 of a connection holding wire and ground wire, one end of one switch of often opening 2 is connected with holding wire, the other end is connected with power supply, resistance R 1, R2, one end of R3 and R4 is connected in parallel on ground wire, the other end of resistance R 1 is connected with one end of the first short circuit cap, the other end of resistance R 2 is connected with one end of the second short circuit cap, the other end of resistance R 3 is connected with one end of the 3rd short circuit cap, the other end of resistance R 4 is connected with one end of the 4th short circuit cap, the first short circuit cap, the second short circuit cap, the other end of the 3rd short circuit cap and the 4th short circuit cap is all connected with No. 3 joints of a PCB binding post, between No. 3 joints of ground wire and a PCB binding post, be in series with the 5th short circuit cap.
Described Control of Electric Vehicles guiding analog module comprises the 3rd PCB binding post of one or two joints, No. 1 joint of the 3rd PCB binding post is connected with No. 1 joint of the 2nd PCB binding post by holding wire, No. 2 joints of the 3rd PCB binding post are connected with No. 2 joints of the 2nd PCB binding post by ground wire, one end of No. 2 joints of the 3rd PCB binding post switch 4 normally closed with is connected, the positive pole that the other end of switch 4 connects a diode is connected, the negative pole of diode is connected with a test lead, between diode and test lead, be parallel with resistance R 5, resistance R 6, resistance R 7 and a potentiometer, the other end of potentiometer is connected with the b binding post of the not moved end of a single-pole double-throw switch (SPDT) 6, the a binding post of the not moved end of single-pole double-throw switch (SPDT) 6 is connected with No. 2 joints of the 3rd PCB binding post, the other end of resistance R 5 is connected with the moved end of single-pole double-throw switch (SPDT) 6, the other end of resistance R 6 is connected with No. 2 binding posts of the not moved end of a single-pole double-throw switch (SPDT) 5, the other end of resistance R 7 is connected with No. 1 binding post of the not moved end of a single-pole double-throw switch (SPDT) 5, the moved end of single-pole double-throw switch (SPDT) 5 is connected with the moved end of single-pole double-throw switch (SPDT) 6, the switch of often opening 3 of connecting between single-pole double-throw switch (SPDT) 5 and single-pole double-throw switch (SPDT) 6.
The present invention adopts said structure, in charging pile circuit, arrange and control guiding and plug detection logical circuit, whether control guiding and plug detection logical circuit can cooperatively interact and detect charge cable and be connected with electric automobile correctly, when charging pile after exact connect ion is opened charging again, avoid charging pile just to charge and cause charging accident not being connected with cable correct in the situation that, eliminated potential safety hazard; In addition, control guiding and plug and detect the charging current notice electric motor car that logical circuit can provide charging pile by the form of pwm pulse, if the charging current that charging pile provides is excessive, electric automobile is not just accepted charging, avoid electric automobile to accept excessive electric current the battery of electric automobile has been caused to damage, avoided the generation of security incident.
In addition, charging pile control guiding and plug testing circuit need it to detect before being arranged in charging system, in the process using, also need regularly it to be overhauled, to ensure the safety and stability of circuit, the present invention adopts said structure, utilize special testing apparatus to test charging pile control guiding and plug testing circuit, test process is simple, accuracy is high, ensure the safety and stability of charging pile control guiding and plug testing circuit, for the maintenance of circuit provides convenience.
Brief description of the drawings:
Fig. 1 is the theory diagram that charging pile control guiding and plug detect logical circuit.
Fig. 2 is the circuit diagram of 12V voltage generation circuit of the present invention.
Fig. 3 is the circuit diagram of pwm signal generation circuit of the present invention.
Fig. 4 is the circuit diagram of cable capacity testing circuit of the present invention.
Fig. 5 is Control of Electric Vehicles guiding simulation modular structure schematic diagram.
Fig. 6 is charge cable analog module structural representation.
Embodiment:
For clearly demonstrating the technical characterstic of this programme, below by embodiment, and in conjunction with its accompanying drawing, the present invention will be described in detail.
As shown in Fig. 1-6, a kind of charging pile control guiding and plug detect logical circuit, comprise a controller, controller produces circuit with a PWM and is connected, one 12V voltage generation circuit-12V voltage output end and PWM produce circuit-12V voltage controling end is connected, 12V voltage generation circuit+12V voltage output end and PWM produce circuit+12V voltage controling end is connected, the input of one signal acquisition circuit is connected with the output that PWM produces circuit, controller is connected with the output of signal acquisition circuit, the input of one cable capacity testing circuit is connected with charging cable, controller is connected with the output of cable capacity testing circuit, the pwm signal of cable capacity testing circuit forwards end and is connected with the PWM generation output of circuit and the CP signal receiving end of charging gun respectively.
Described controller is STM32F103VET6_1 control chip, the CPPWM pin of controller is connected with the input that PWM produces circuit, the CPAD pin of controller is connected with the output of signal acquisition circuit, and the CCAD pin of controller is connected with the output of cable capacity testing circuit.
Described 12V voltage generation circuit comprises a 12V voltage generation circuit control chip, between the VIN pin of 12V voltage generation circuit control chip and EN pin, be connected with resistance R 7, VIN pin is connected with the capacitor C 31 of ground connection, between VIN pin and SW pin, be connected with inductance L 5, VIN pin, resistance R 7 are all connected with 5V power supply with the link of VIN pin with inductance L 5 with the link of VIN pin with link, the capacitor C 31 of VIN pin, the SW pin of 12V voltage generation circuit control chip is connected with a parallel connected end of double diode D4 in parallel and double diode D5, on double diode D4 branch road by No. 3 pins of the double diode D4 capacitor C 25 of connecting, on the branch road of double diode D5 by No. 3 pins of the double diode D5 capacitor C 30 of connecting, one parallel end connection ground of resistance R 5, capacitor C 27 and the capacitor C 28 after parallel connection, the other end is connected with No. 1 pin of double diode D4, it is-output of 12V voltage, and No. 2 pin ground connection of double diode D4 arrange, No. 1 pin ground connection of double diode D5 arranges, a parallel connected end of resistance R 6 and No. 2 pins of double diode D5 that capacitor C 32 in parallel is 432k Ω with resistance are connected, it is+output of 12V voltage, the other end is connected with the FB pin of 12V voltage generation circuit control chip, the resistance R 8 that capacitor C 32 after parallel connection is 49.9k Ω with the resistance R 6 that resistance is 432k Ω with a resistance is connected with the GND pin of 12V voltage generation circuit control chip after connecting, between No. 2 pins of double diode D5 and the GND pin of 12V voltage generation circuit control chip, be connected with capacitor C in parallel 33 and capacitor C 34, the GND pin of 12V voltage generation circuit control chip, resistance is the resistance R 8 and GND pin link of 49.9k Ω, resistance is the resistance R 6 and GND pin link and capacitor C 33 and the equal ground connection of GND pin link of 432k Ω.
Produce in electricity at 12V voltage, 12V voltage generation circuit chip is SC4503TSK Ω TRT control chip, 12V voltage generation circuit is in the time of work, the input VIN of 12V voltage generation circuit control chip is 5V, its output SW voltage is 5V, FB terminal voltage is 1.25V, therefore, resistance is that the voltage on the R8 of 49.9K Ω is 1.25V, be 0.025A by the electric current of resistance R 8, the resistance being in series with resistance R 8 is that one end that the resistance R 6 of 432k Ω and No. 2 pins of double diode D5 are connected is 0.025A × (432 Ω+49.9 Ω)=12.07V, therefore resistance R 6 with the link voltage of No. 2 pins of double diode D5 is+12V, it is 12V voltage generation circuit+12V voltage output end.No. 1 leads ends voltage of double diode D4 is the reverse voltage of No. 2 leads ends voltages of double diode D5, and therefore double diode D4 No. 1 leads ends voltage is-12V, it is-12V voltage generation circuit-12V voltage output end.
Described PWM produces circuit and comprises that a PWM produces circuit control chip, the VF-pin that PWM produces circuit control chip is connected with the CPPWM pin of controller, VF+ pin is connected with power supply after being connected with a resistance R 30, between VCC pin and GND pin, be in series with capacitor C 45, the link of capacitor C 45 and GND pin and GND pin and 12V voltage generation circuit-12V output is connected, between VCC pin and VO pin, be connected with resistance R parallel with one another 32 and resistance R 33, VCC pin, the link of resistance R 32 and VCC pin, the link of the link of resistance R 33 and VCC pin and capacitor C 45 and VCC pin all with 12V voltage generation circuit+12V output is connected, on VO pin, be connected with NPN triode Q3 parallel with one another and PNP triode Q5, the collector electrode of NPN triode Q3 and 12V voltage generation circuit+12V output is connected, the collector electrode of PNP triode Q5 and 12V voltage generation circuit-12V output is connected, the emitter of the NPN triode Q3 resistance R 35 of connecting after being connected with the emitter of PNP triode Q5, the other end of resistance R 35 is output.
Produce in circuit at PWM, it is HCPL2503 control chip that PWM produces circuit control chip, the CPPWM pin of the controller being connected with PWM generation circuit control chip produces low and high level, in the time that high level is inputted, the VO pin that PWM produces circuit control chip should be high level mutually, VO pin sends high level to coupled two triodes parallel with one another, the base stage of NPN triode Q3 is receiving conducting after high level, the base stage of PNP triode Q5 is ended receiving after high level, the voltage of the resistance R 35 being now connected with the emitter of two triodes is+12V voltage, in the time that low level is inputted, the VO pin that PWM produces circuit control chip should be low level mutually, VO pin sends low level to coupled two triodes parallel with one another, the base stage of NPN triode Q3 is ended receiving after low level, the base stage of PNP triode Q5 is receiving conducting after high level, the voltage of the resistance R 35 being now connected with the emitter of two triodes is-12V voltage.
Described cable capacity testing circuit comprises a resistance R 45, one end of resistance R 45 and resistance R 46 are in series, another termination 5V voltage of resistance R 45, between R45 and R46, connect one or two binding post, No. 1 binding post of two binding posts is that pwm signal forwards end, the CP signal receiving end that No. 1 binding post produces by wire and PWM on CP signal output part and the charging gun of circuit is connected, and No. 2 binding posts of two binding posts are connected with CCAD pin and the charge cable of controller by wire.
A kind of charging pile control guiding and plug detect the testing apparatus of logical circuit, comprise the charge cable analog module and the Control of Electric Vehicles guiding analog module that are connected with ground wire by holding wire, the signal input part of charge cable analog module is connected with the pwm signal forwarding end that charging pile control guiding and plug detect logical circuit, described charge cable analog module is for simulating the charge cable of different size, Control of Electric Vehicles guiding analog module is used for simulating the different responsive states of Control of Electric Vehicles guiding module, the signal receiving by test Control of Electric Vehicles guiding module, whether normally judge that charging pile control guidance circuit and plug detect logical circuit.
Described charge cable analog module comprises a PCB binding post of one or three joints and the 2nd PCB binding post of one or two joints, the signal input connector that No. 1 joint of the one PCB binding post is charge cable analog module, between No. 1 joint of a PCB binding post and No. 1 joint of the 2nd PCB binding post, be connected a holding wire, between No. 2 joints of the one PCB binding post and No. 2 joints of the 2nd PCB binding post, be connected a ground wire, between holding wire and ground wire, be provided with the switch of often opening 1 of a connection holding wire and ground wire, one end of one switch of often opening 2 is connected with holding wire, the other end is connected with power supply, resistance R 1, R2, one end of R3 and R4 is connected in parallel on ground wire, the other end of resistance R 1 is connected with one end of the first short circuit cap, the other end of resistance R 2 is connected with one end of the second short circuit cap, the other end of resistance R 3 is connected with one end of the 3rd short circuit cap, the other end of resistance R 4 is connected with one end of the 4th short circuit cap, the first short circuit cap, the second short circuit cap, the other end of the 3rd short circuit cap and the 4th short circuit cap is all connected with No. 3 joints of a PCB binding post, between No. 3 joints of ground wire and a PCB binding post, be in series with the 5th short circuit cap.
Described Control of Electric Vehicles guiding analog module comprises the 3rd PCB binding post of one or two joints, No. 1 joint of the 3rd PCB binding post is connected with No. 1 joint of the 2nd PCB binding post by holding wire, No. 2 joints of the 3rd PCB binding post are connected with No. 2 joints of the 2nd PCB binding post by ground wire, one end of No. 2 joints of the 3rd PCB binding post switch 4 normally closed with is connected, the positive pole that the other end of switch 4 connects a diode is connected, the negative pole of diode is connected with a test lead, between diode and test lead, be parallel with resistance R 5, resistance R 6, resistance R 7 and a potentiometer, the other end of potentiometer is connected with the b binding post of the not moved end of a single-pole double-throw switch (SPDT) 6, the a binding post of the not moved end of single-pole double-throw switch (SPDT) 6 is connected with No. 2 joints of the 3rd PCB binding post, the other end of resistance R 5 is connected with the moved end of single-pole double-throw switch (SPDT) 6, the other end of resistance R 6 is connected with No. 2 binding posts of the not moved end of a single-pole double-throw switch (SPDT) 5, the other end of resistance R 7 is connected with No. 1 binding post of the not moved end of a single-pole double-throw switch (SPDT) 5, the moved end of single-pole double-throw switch (SPDT) 5 is connected with the moved end of single-pole double-throw switch (SPDT) 6, the switch of often opening 3 of connecting between single-pole double-throw switch (SPDT) 5 and single-pole double-throw switch (SPDT) 6.
The course of work that charging pile control guiding and plug detect logical circuit is:
Before the charging gun of charging pile is connected with electric automobile, the CPPWM pin of controller produces circuit to PWM and continues to send high level, the CP signal input part of now PWM generation circuit is+12V, voltage signal is sent to controller by the signal acquisition circuit being connected with CP signal input part, receive+12V of controller voltage signal, judge that current state is not-connected status, after charging gun is connected with electric automobile, if connect correct, the output of PWM generation circuit is connected with electric automobile coupler after being connected with No. 1 binding post of two binding posts in cable capacity testing circuit, resistance on electric automobile coupler is increased in the loop of PWM generation circuit, the now lower voltage of resistance R 35, voltage signal is sent to controller by the signal acquisition circuit being connected with CP signal input part, controller receives lower voltage signal, just can judge current state is charging gun and electric automobile exact connect ion.
Start after electric automobile power supply at charging pile, the cable resistance being connected with No. 2 binding posts of two binding posts in cable capacity testing circuit is linked in cable capacity testing circuit, the voltage that now CCAD is ordered raises, controller receives after the signal of CCAD point voltage rising, judge the specification of cable by voltage signal, controller receives after CCAD point voltage signal, lowest high-current value charging pile being provided according to concrete cable specification produces circuit by CPPWM pin to PWM and sends the continuous low and high level that obtains, PWM produces circuit and is receiving after continuous low and high level, CP signal input part produces continuously ± 12V pulse signal, electric automobile is after receive ± 12V pulse signal, can learn the size of charging current according to the duty ratio of ± 12V pulse signal, if the rated current of electric automobile is more than or equal to the electric current that charging pile provides, the vehicle-mounted charge of Rechargeable vehicle starts to carry out charging work, if electric current is larger, exceed the rated current of electric automobile, electric automobile is not accepted charging.
The test process that charging pile control guiding and plug detect the testing apparatus of logical circuit is:
In the time charging pile control guiding and plug detected to logical circuit detecting, No. 1 joint of the one PCB binding post of charge cable analog module is connected with the CP signal output part of cable capacity detection circuit, No. 3 joints of the one PCB binding post are connected with the input of cable capacity detection circuit, the input of signal acquisition circuit is connected with No. 1 joint of a PCB binding post, its ground wire grounded setting, the test lead of Control of Electric Vehicles being guided to analog module is connected with oscilloscope.
Can observe the dynamic change of the CP signal that the control guidance circuit of charging pile circuit exports by single-pole double-throw switch (SPDT) 6 being closed into the b binding post of moved end not, thus the situation of change of observing CP signal in the time changing resistance access that can be complete.First potentiometer is adjusted to maximum value state, now, the CP signal input part that PWM produces circuit is+12V, because potentiometer resistance is very large, the should be+12V of voltage that therefore signal acquisition circuit collects, controller judges not exact connect ion of electric automobile and charging pile, charging pile can not be powered, cable capacity detection circuit provides CP signal by CP signal output part to charge cable analog module, and CP signal is sent to test lead by holding wire, therefore should be shown as at this moment+12V of ripple device.
The resistance of regulator potentiometer, along with the resistance of potentiometer constantly reduces, corresponding the reducing of voltage that signal acquisition circuit collects, in the time being reduced to 9.8V, Control of Electric Vehicles guiding module can judge self with charging pile exact connect ion, electric automobile is in the time being reduced to 6.8V, the state of Control of Electric Vehicles guiding simulation module simulation electric automobile load access, now, if controller can judge electric automobile and charging pile exact connect ion by controlling guidance circuit, PWM produces the CP signal input part output pwm pulse signal of circuit, cable capacity detection circuit provides pwm pulse signal by CP signal output part to charge cable analog module, CP signal is sent to test lead by holding wire, if oscilloscope shows pwm pulse signal at this moment, and the relay drive circuit control relay closure in charging pile circuit, prove control guidance circuit can correctly judge charging pile with electric automobile exact connect ion.When by normally closed switch 4 closure, Control of Electric Vehicles guiding analog module and holding wire disconnect, Control of Electric Vehicles guiding simulation module simulation and charging pile disconnect state, now, if oscilloscope is from become+12V of pwm pulse signal, and relay drive circuit control relay is opened, prove that the control guidance circuit of charging pile circuit can correctly judge that charging pile disconnects with electric automobile.
In the time single-pole double-throw switch (SPDT) 6 being closed into a binding post of moved end not, R5 is linked in circuit, now, the voltage that signal acquisition circuit collects is 9.8V, again by switch 3 closures, the state of analog electrical electrical automobile access load, if oscilloscope shows at this moment the control guidance circuit of pwm pulse signal explanation charging pile circuit and normally works, by single-pole double-throw switch (SPDT) 5 never No. 2 binding posts of moved end be closed into not No. 1 binding post of moved end, analog electrical electrical automobile accesses the more state of heavy load, if charging pile response ventilation state, the control guidance circuit that proves charging pile circuit can be sent to controller by loading condition, controller response is ventilated.
The first short circuit cap in charge cable analog module is communicated with, in resistance R 1 access circuit, charge cable analog module is simulated the charge cable of a certain specification, the input of the cable capacity detection circuit being connected with No. 3 joints of a PCB binding post is sent voltage signal back to controller, controller draws charging pile charging current value by judging voltage signal, produce circuit and send the pwm pulse signal of certain duty ratio by PWM, now, if the current value calculating according to the duty ratio of the shown pwm pulse signal of oscilloscope is identical with the current value of the resistance R 1 corresponding charge cable accessing in charge cable analog module, prove that plug detects logical circuit and can correctly judge the charge cable of 1 corresponding specification of resistance R, control guidance circuit simultaneously and can correctly current value signal must be sent to electric automobile, again successively by the second short circuit cap, the 3rd short circuit cap, the 4th short circuit cap and the 5th short circuit cap are connected, can be to resistance R 2, resistance R 3, resistance R 4 resistances detect for the charge cable of 0 corresponding specification, check that can controller detect logical circuit by plug and make corresponding judgement.
In addition, by by switch 2 closures that are arranged in electric wire cable analog module, the situation of analog signal line power line short circuit, can test charging pile circuit detect by plug that logical circuit is learnt and control relay disconnects;
By by switch 1 closure being arranged in electric wire cable analog module, the situation of analog signal line and ground wire short circuit, can test charging pile circuit detect that logical circuit is learnt and control relay disconnection in time by plug.
Reasonable in design of the present invention, in charging pile circuit, arrange and control guiding and plug detection logical circuit, whether control guiding and plug detection logical circuit can cooperatively interact and detect charge cable and be connected with electric automobile correctly, when charging pile after exact connect ion is opened charging again, avoid charging pile just to charge and cause charging accident not being connected with cable correct in the situation that, eliminated potential safety hazard; In addition, control guiding and plug and detect the charging current notice electric motor car that logical circuit can provide charging pile by the form of pwm pulse, if the charging current that charging pile provides is excessive, electric automobile is not just accepted charging, avoid electric automobile to accept excessive electric current the battery of electric automobile has been caused to damage, avoided the generation of security incident.Meanwhile, utilize special testing apparatus to test charging pile control guiding and plug testing circuit, test process is simple, and accuracy is high, has ensured the safety and stability of charging pile control guiding and plug testing circuit, for the maintenance of circuit provides convenience.
Above-mentioned embodiment can not be served as limiting the scope of the invention, and for those skilled in the art, any alternate modification that embodiment of the present invention is made or conversion all drop in protection scope of the present invention.
The present invention does not describe part in detail, is those skilled in the art of the present technique's known technology.
Claims (8)
1. a charging pile control guiding and plug detect logical circuit, it is characterized in that: comprise a controller, controller produces circuit with a PWM and is connected, one 12V voltage generation circuit-12V voltage output end and PWM produce circuit-12V voltage controling end is connected, 12V voltage generation circuit+12V voltage output end and PWM produce circuit+12V voltage controling end is connected, the input of one signal acquisition circuit is connected with the output that PWM produces circuit, controller is connected with the output of signal acquisition circuit, the input of one cable capacity testing circuit is connected with charging cable, controller is connected with the output of cable capacity testing circuit, the pwm signal of cable capacity testing circuit forwards end and is connected with the PWM generation output of circuit and the CP signal receiving end of charging gun respectively.
2. charging pile control guiding according to claim 1 and plug detect logical circuit, it is characterized in that: described controller is STM32F103VET6_1 control chip, the CPPWM pin of controller is connected with the input that PWM produces circuit, the CPAD pin of controller is connected with the output of signal acquisition circuit, and the CCAD pin of controller is connected with the output of cable capacity testing circuit.
3. charging pile control guiding according to claim 1 and plug detect logical circuit, it is characterized in that: described 12V voltage generation circuit comprises a 12V voltage generation circuit control chip, between the VIN pin of 12V voltage generation circuit control chip and EN pin, be connected with resistance R 7, VIN pin is connected with the capacitor C 31 of ground connection, between VIN pin and SW pin, be connected with inductance L 5, VIN pin, resistance R 7 are all connected with 5V power supply with the link of VIN pin with inductance L 5 with the link of VIN pin with link, the capacitor C 31 of VIN pin, the SW pin of 12V voltage generation circuit control chip is connected with a parallel connected end of double diode D4 in parallel and double diode D5, on double diode D4 branch road by No. 3 pins of the double diode D4 capacitor C 25 of connecting, on the branch road of double diode D5 by No. 3 pins of the double diode D5 capacitor C 30 of connecting, one parallel end connection ground of resistance R 5, capacitor C 27 and the capacitor C 28 after parallel connection, the other end is connected with No. 1 pin of double diode D4, it is-output of 12V voltage, and No. 2 pin ground connection of double diode D4 arrange, No. 1 pin ground connection of double diode D5 arranges, a parallel connected end of resistance R 6 and No. 2 pins of double diode D5 that capacitor C 32 in parallel is 432k with resistance are connected, it is+output of 12V voltage, the other end is connected with the FB pin of 12V voltage generation circuit control chip, the resistance R 8 that capacitor C 32 after parallel connection is 49.9k Ω with the resistance R 6 that resistance is 432k Ω with a resistance is connected with the GND pin of 12V voltage generation circuit control chip after connecting, between No. 2 pins of double diode D5 and the GND pin of 12V voltage generation circuit control chip, be connected with capacitor C in parallel 33 and capacitor C 34, the GND pin of 12V voltage generation circuit control chip, resistance is the resistance R 8 and GND pin link of 49.9k Ω, resistance is the resistance R 6 and GND pin link and capacitor C 33 and the equal ground connection of GND pin link of 432k Ω.
4. charging pile control guiding according to claim 2 and plug detect logical circuit, it is characterized in that: described PWM produces circuit and comprises that a PWM produces circuit control chip, the VF-pin that PWM produces circuit control chip is connected with the CPPWM pin of controller, VF+ pin is connected with power supply after being connected with a resistance R 30, between VCC pin and GND pin, be in series with capacitor C 45, the link of capacitor C 45 and GND pin and GND pin and 12V voltage generation circuit-12V output is connected, between VCC pin and VO pin, be connected with resistance R parallel with one another 32 and resistance R 33, VCC pin, the link of resistance R 32 and VCC pin, the link of the link of resistance R 33 and VCC pin and capacitor C 45 and VCC pin all with 12V voltage generation circuit+12V output is connected, on VO pin, be connected with NPN triode Q3 parallel with one another and PNP triode Q5, the collector electrode of NPN triode Q3 and 12V voltage generation circuit+12V output is connected, the collector electrode of PNP triode Q5 and 12V voltage generation circuit-12V output is connected, the emitter of the NPN triode Q3 resistance R 35 of connecting after being connected with the emitter of PNP triode Q5, the other end of resistance R 35 is the output that PWM produces circuit.
5. charging pile control guiding according to claim 2 and plug detect logical circuit, it is characterized in that: described cable capacity testing circuit comprises a resistance R 45, one end of resistance R 45 and resistance R 46 are in series, another termination 5V voltage of resistance R 45, between R45 and R46, connect one or two binding post, No. 1 binding post of two binding posts is that pwm signal forwards end, the CP signal receiving end that No. 1 binding post produces by wire and PWM on output and the charging gun of circuit is connected, No. 2 binding posts of two binding posts are connected with CCAD pin and the charge cable of controller by wire.
6. a charging pile control guiding as claimed in claim 1 and plug detect the testing apparatus of logical circuit, it is characterized in that: comprise the charge cable analog module and the Control of Electric Vehicles guiding analog module that are connected with ground wire by holding wire, the signal input connector of charge cable analog module is connected with the pwm signal forwarding end that charging pile control guiding and plug detect logical circuit, described charge cable analog module is for simulating the charge cable of different size, Control of Electric Vehicles guiding analog module is used for simulating the different responsive states of Control of Electric Vehicles guiding module, the signal receiving by test Control of Electric Vehicles guiding module, whether normally judge that charging pile control guidance circuit and plug detect logical circuit.
7. charging pile control guiding according to claim 6 and plug detect the testing apparatus of logical circuit, it is characterized in that: described charge cable analog module comprises a PCB binding post of one or three joints and the 2nd PCB binding post of one or two joints, the signal input connector that No. 1 joint of the one PCB binding post is charge cable analog module, between No. 1 joint of a PCB binding post and No. 1 joint of the 2nd PCB binding post, be connected a holding wire, between No. 2 joints of the one PCB binding post and No. 2 joints of the 2nd PCB binding post, be connected a ground wire, between holding wire and ground wire, be provided with the switch of often opening 1 of a connection holding wire and ground wire, one end of one switch of often opening 2 is connected with holding wire, the other end is connected with power supply, resistance R 1, R2, one end of R3 and R4 is connected in parallel on ground wire, the other end of resistance R 1 is connected with one end of the first short circuit cap, the other end of resistance R 2 is connected with one end of the second short circuit cap, the other end of resistance R 3 is connected with one end of the 3rd short circuit cap, the other end of resistance R 4 is connected with one end of the 4th short circuit cap, the first short circuit cap, the second short circuit cap, the other end of the 3rd short circuit cap and the 4th short circuit cap is all connected with No. 3 joints of a PCB binding post, between No. 3 joints of ground wire and a PCB binding post, be in series with the 5th short circuit cap.
8. charging pile control guiding according to claim 6 and plug detect the testing apparatus of logical circuit, it is characterized in that: described Control of Electric Vehicles guiding analog module comprises the 3rd PCB binding post of one or two joints, No. 1 joint of the 3rd PCB binding post is connected with No. 1 joint of the 2nd PCB binding post by holding wire, No. 2 joints of the 3rd PCB binding post are connected with No. 2 joints of the 2nd PCB binding post by ground wire, one end of No. 2 joints of the 3rd PCB binding post switch 4 normally closed with is connected, the positive pole that the other end of switch 4 connects a diode is connected, the negative pole of diode is connected with a test lead, between diode and test lead, be parallel with resistance R 5, resistance R 6, resistance R 7 and a potentiometer, the other end of potentiometer is connected with the b binding post of the not moved end of a single-pole double-throw switch (SPDT) 6, the a binding post of the not moved end of single-pole double-throw switch (SPDT) 6 is connected with No. 2 joints of the 3rd PCB binding post, the other end of resistance R 5 is connected with the moved end of single-pole double-throw switch (SPDT) 6, the other end of resistance R 6 is connected with No. 2 binding posts of the not moved end of a single-pole double-throw switch (SPDT) 5, the other end of resistance R 7 is connected with No. 1 binding post of the not moved end of a single-pole double-throw switch (SPDT) 5, the moved end of single-pole double-throw switch (SPDT) 5 is connected with the moved end of single-pole double-throw switch (SPDT) 6, the switch of often opening 3 of connecting between single-pole double-throw switch (SPDT) 5 and single-pole double-throw switch (SPDT) 6.
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| CN201410437839.1A CN104184193B (en) | 2014-08-29 | 2014-08-29 | Charging pile control guide and plug detection logic circuit and test device thereof |
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| CN105789997A (en) * | 2016-03-25 | 2016-07-20 | 北京新能源汽车股份有限公司 | High voltage socket connector device, electric vehicle and power system of electric vehicle |
| CN106042954A (en) * | 2016-05-27 | 2016-10-26 | 安徽明瑞智能科技股份有限公司 | Direct-current charging monitoring system for automobile charging pile |
| CN106300583A (en) * | 2016-10-09 | 2017-01-04 | 深圳巴斯巴科技发展有限公司 | A kind of electric motor car novel AC charging controller |
| CN107123905A (en) * | 2017-07-07 | 2017-09-01 | 青岛特锐德电气股份有限公司 | A kind of charging gun and charging equipment |
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| CN109030985A (en) * | 2018-06-12 | 2018-12-18 | 深圳英飞源技术有限公司 | A kind of one vehicle multiple gun rifle position detection method of direct-current charging post |
| CN109030985B (en) * | 2018-06-12 | 2021-01-05 | 深圳英飞源技术有限公司 | One-vehicle multi-gun position detection method for direct-current charging pile |
| CN110417084A (en) * | 2019-07-23 | 2019-11-05 | 深兰科技（上海）有限公司 | A kind of robot charging method and device |
| CN113442759A (en) * | 2019-12-27 | 2021-09-28 | 重庆国翰能源发展有限公司 | Charging pile with switchable control guide circuit and charging method |
| CN113442758A (en) * | 2019-12-27 | 2021-09-28 | 重庆国翰能源发展有限公司 | Charging pile and charging method for simultaneously conducting guidance switching and power distribution in wireless mode |
| CN113442758B (en) * | 2019-12-27 | 2022-07-12 | 重庆国翰能源发展有限公司 | Charging pile and charging method for simultaneously conducting guidance switching and power distribution in wireless mode |
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