CN204030687U - A kind of wall-hanging charging pile circuit - Google Patents
A kind of wall-hanging charging pile circuit Download PDFInfo
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- CN204030687U CN204030687U CN201420496999.9U CN201420496999U CN204030687U CN 204030687 U CN204030687 U CN 204030687U CN 201420496999 U CN201420496999 U CN 201420496999U CN 204030687 U CN204030687 U CN 204030687U
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Abstract
A kind of wall-hanging charging pile circuit, comprise a controller, controller and PWM produce circuit and are connected,-12V the voltage controling end that-12V voltage output end and the PWM of one 12V voltage generation circuit produce circuit is connected, + 12V the voltage controling end that+12V voltage output end and the PWM of 12V voltage generation circuit produce circuit is connected, and the output that input and the PWM of a signal acquisition circuit produce circuit is connected.The utility model adopts such scheme, reasonable in design, in charging pile circuit, signalization Acquisition Circuit, PWM produce circuit and cable capacity detection circuit, whether signal acquisition circuit and PWM generation circuit can detect charge cable and be connected correctly with electric automobile, when after exact connect ion, charging pile opens charging again, avoid charging pile and just carry out charging when not being connected correct with cable and cause charging accident.
Description
Technical field:
The utility model relates to a kind of wall-hanging charging pile circuit.
Background technology:
Along with low-carbon economy become China's economic development, theme, electric automobile, as new forms of energy strategy and the important component part of intelligent grid, will become the emphasis that Chinese Automobile Industry ' and energy industry from now on develop.Ev industry is a systematic engineering of business, and wherein the charging of electric automobile is one of its key link.
At present, owing to there is the charge cable of Multiple Type on the market, and the decision circuitry do not matched with it in charging pile circuit, therefore in the process of charging, there is many problems: 1, charging gun on charging pile is after being connected with electric automobile, electric automobile can detect whether exact connect ion automatically, if non-exact connect ion, electric motor car can not accept electric energy, but now charging pile circuit cannot judge charging gun whether with electric automobile exact connect ion, if fail just to open charging with charging pile when charging pile exact connect ion at cable, 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, when the charging gun of charging pile is connected with electric automobile, the charging current notice electric automobile that charging pile cannot provide by charging pile circuit, electric automobile charges when learning the electric current that charging pile can provide, if the electric current that charging pile provides is greater than the rated charge stream of electric automobile, then can cause damage to electric automobile in charging process, security incident occurs.
Utility model content:
The utility model is in order to make up the deficiencies in the prior art, provide a kind of wall-hanging charging pile circuit, its reasonable in design, in charging pile circuit, signalization Acquisition Circuit, PWM produce circuit and cable capacity testing circuit, whether signal acquisition circuit and PWM generation circuit can detect charge cable and be connected correctly with electric automobile, when after exact connect ion, charging pile opens charging again, avoid charging pile just to carry out charging when not being connected correct with cable and cause charging accident, eliminate potential safety hazard; In addition, PWM produces the charging current notice electric motor car that charging pile can be provided by the form of pwm pulse by circuit, if the charging current that charging pile provides is excessive, electric automobile does not just accept charging, avoid electric automobile to accept the battery of excessive electric current to electric automobile and cause damage, avoid the generation of security incident, solve problems of the prior art.
The utility model for solving the problems of the technologies described above adopted technical scheme is:
A kind of wall-hanging charging pile circuit, comprise a controller, controller and PWM produce circuit and are connected,-12V the voltage controling end that-12V voltage output end and the PWM of one 12V voltage generation circuit produce circuit is connected, + 12V the voltage controling end that+12V voltage output end and the PWM of 12V voltage generation circuit produce circuit is connected, the output that input and the PWM of one signal acquisition circuit produce circuit is connected, controller is connected with the output of signal acquisition circuit, the input of one cable capacity testing circuit is connected with charge cable, controller is connected with the output of cable capacity testing circuit, the pwm signal of cable capacity testing circuit forwards holds the CP signal receiving end of the output and electric rifle that produce circuit with PWM to be respectively connected, controller is connected with a relay drive circuit, the input of one ic for energy metering is connected with the electrical energy inputs of relay, the output of ic for energy metering is connected with controller.
Described controller is STM32F103VET6_1 control chip, the input that CPPWM pin and the PWM of controller produce circuit is connected, the CPAD pin of controller is connected with the output of signal acquisition circuit, the CCAD pin of controller is connected with the output of cable capacity testing circuit, PB0 with the PB1 pin of controller is connected with relay drive circuit, TX2 with the DX2 pin of controller is connected with the output of ic for energy metering.
Described 12V voltage generation circuit comprises a 12V voltage generation circuit control chip, resistance R7 is connected with between the VIN pin of 12V voltage generation circuit control chip and EN pin, VIN pin is connected with the electric capacity C31 of ground connection, between VIN pin and SW pin, be connected with inductance L 5, VIN pin, the link of resistance R7 and VIN pin, electric capacity C31 be all connected with 5V power supply with the link of VIN pin with inductance L 5 with the link of VIN pin, the SW pin of 12V voltage generation circuit control chip is connected with a parallel connected end of double diode D5 with the double diode D4 of parallel connection, by No. 3 pin serial connection one electric capacity C25 of double diode D4 on double diode D4 branch road, by No. 3 pin serial connection one electric capacity C30 of double diode D5 on the branch road of double diode D5, the one parallel end connection ground of the resistance R5 after parallel connection, electric capacity C27 and electric capacity C28, the other end is connected with No. 1 pin of double diode D4, it is the output of-12V voltage, and No. 2 pin ground connection of double diode D4 are arranged, No. 1 pin ground connection of double diode D5 is arranged, electric capacity C32 in parallel is that a parallel connected end of the resistance R6 of 432k Ω is connected with No. 2 pins of double diode D5 with resistance, it is the output of+12V voltage, the other end is connected with the FB pin of 12V voltage generation circuit control chip, electric capacity C32 after parallel connection and resistance are be connected with the GND pin of 12V voltage generation circuit control chip after resistance R8 that resistance R6 and a resistance of 432k Ω is 49.9k Ω connects, electric capacity C33 in parallel and electric capacity C34 is connected with between No. 2 pins and the GND pin of 12V voltage generation circuit control chip of double diode D5, the GND pin of 12V voltage generation circuit control chip, resistance is resistance R8 and the GND pin link of 49.9k Ω, resistance is the resistance R6 of 432k Ω and GND pin link and electric capacity C33 and the equal ground connection of GND pin link.
Described PWM produces circuit and comprises a PWM generation circuit control chip, PWM produces the VF-pin of circuit control chip and is connected with the CPPWM pin of controller, VF+ pin is connected with power supply after being connected with a resistance R30, electric capacity C45 is in series with between VCC pin and GND pin, electric capacity C45 is connected with-12V the output of 12V voltage generation circuit with GND pin with the link of GND pin, resistance R32 parallel with one another and resistance R33 is connected with between VCC pin and VO pin, VCC pin, the link of resistance R32 and VCC pin, resistance R33 is all connected with+12V the output of 12V voltage generation circuit with the link of VCC pin with electric capacity C45 with the link of VCC pin, VO pin is connected with NPN triode Q3 parallel with one another and PNP triode Q5, the collector electrode of NPN triode Q3 is connected with+12V the output of 12V voltage generation circuit, the collector electrode of PNP triode Q5 is connected with-12V the output of 12V voltage generation circuit, connect after the emitter of NPN triode Q3 is connected with the emitter of PNP triode Q5 a resistance R35, the other end of resistance R35 is output.
Described cable capacity testing circuit comprises a resistance R45, one end and the resistance R46 of resistance R45 are in series, another termination 5V voltage of resistance R45, one or two binding post is connected between R45 and R46, No. 1 binding post of two binding posts is that pwm signal forwards end, the CP signal receiving end that No. 1 binding post is produced on the CP signal output part of circuit and charging gun by wire and PWM is connected, and No. 2 binding posts of two binding posts are connected by the CCAD pin of wire and controller and charge cable.
Also comprise LED circuit, LED circuit comprises red light control circuit, green light control circuit and blue lamp control circuit; Red light control circuit is connected with the PA4 pin of controller, and green light control circuit is connected with the PA5 pin of controller, and blue lamp control circuit is connected with the PA6 pin of controller.
Described relay drive circuit comprises relay drive circuit N and relay drive circuit L, relay drive circuit N comprises a photoelectrical coupler U7, No. 1 pin of photoelectrical coupler U7 input is connected with supply voltage, No. 2 pins are connected with the PB0 pin of controller after connecting with a resistance R9, be connected with the base stage of a NPN triode Q2 after No. 4 pins of photoelectrical coupler U7 output are connected with a resistance R10, a resistance R12 is connected between resistance R10 and the emitter of NPN triode Q2, the grounded emitter of NPN triode Q2 is arranged, the collector electrode of NPN triode Q2 is connected with a drive end of relay K 2, another drive end of relay K 2 is connected after a resistance R4 and is connected with photoelectrical coupler U7 output No. 3 pins, No. 3 pins of photoelectrical coupler U7 output are connected with 12V supply voltage, relay drive circuit L comprises a photoelectrical coupler U6, No. 1 pin of photoelectrical coupler U6 input is connected with supply voltage, No. 2 pins are connected with the PB1 pin of controller after connecting with a resistance R51, be connected with the base stage of a NPN triode Q1 after No. 4 pins of photoelectrical coupler U6 output are connected with a resistance R51, a resistance R11 is connected between the emitter of R51 and NPN triode Q1, the grounded emitter of NPN triode Q1 is arranged, the collector electrode of NPN triode Q1 is connected with a drive end of relay K 1, another drive end of relay K 1 is connected after a resistance R3 and is connected with photoelectrical coupler U6 output No. 3 pins, No. 3 pins of photoelectrical coupler U6 output are connected with 12V supply voltage.
Also comprise a telecommunication circuit, also comprise a telecommunication circuit, described telecommunication circuit comprises a telecommunication circuit control chip, telecommunication circuit control chip is SIM900A control chip, the SIM900-TXD pin of telecommunication circuit control chip is connected with GPRS module serial communication circuit with SIM900-TXD pin, the TX4 of controller, TD4 pin is connected with GPRS module serial communication circuit, the Netlingt pin of telecommunication circuit control chip is connected with GPRS module status indicator lamp circuit with BAT pin, the start pin of telecommunication circuit control chip is connected with the output of SIM900 boot-strap circuit, the input of SIM900 boot-strap circuit is connected with the PE3 pin of controller, the SIMVCC pin of telecommunication circuit control chip, SIMRST pin, SIMCLK pin is connected with a sim card slot circuit with SIMDATA pin.
The utility model adopts such scheme, reasonable in design, in charging pile circuit, signalization Acquisition Circuit, PWM produce circuit and cable capacity detection circuit, whether signal acquisition circuit and PWM generation circuit can detect charge cable and be connected correctly with electric automobile, when after exact connect ion, charging pile opens charging again, avoid charging pile just to carry out charging when not being connected correct with cable and cause charging accident, eliminate potential safety hazard; In addition, PWM produces the charging current notice electric motor car that charging pile can be provided by the form of pwm pulse by circuit, if the charging current that charging pile provides is excessive, electric automobile does not just accept charging, avoids the generation of security incident.
Accompanying drawing illustrates:
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the circuit diagram of the utility model 12V voltage generation circuit.
Fig. 3 is the circuit diagram of the utility model pwm signal generation circuit.
Fig. 4 is the circuit diagram of the utility model cable capacity testing circuit.
Fig. 5 is the circuit diagram of the utility model LED circuit.
Fig. 6 is the circuit diagram of relay drive circuit N of the present utility model.
Fig. 7 is the circuit diagram of relay drive circuit L of the present utility model.
Fig. 8 is the circuit diagram of telecommunication circuit control chip of the present utility model.
Fig. 9 is the circuit diagram of GPRS module serial communication circuit of the present utility model.
Figure 10 is the circuit diagram that GPRS module status indicator lamp circuit of the present utility model is connected.
Figure 11 is the circuit diagram of sim card slot circuit of the present utility model.
Figure 12 is the circuit diagram of SIM900 boot-strap circuit of the present utility model.
Embodiment:
For clearly demonstrating the technical characterstic of this programme, below by embodiment, and in conjunction with its accompanying drawing, the utility model is elaborated.
As shown in figs. 1-12: a kind of wall-hanging charging pile circuit, comprise a controller, controller and PWM produce circuit and are connected,-12V the voltage controling end that-12V voltage output end and the PWM of one 12V voltage generation circuit produce circuit is connected, + 12V the voltage controling end that+12V voltage output end and the PWM of 12V voltage generation circuit produce circuit is connected, the output that input and the PWM of one signal acquisition circuit produce circuit is connected, controller is connected with the output of signal acquisition circuit, the input of one cable capacity testing circuit is connected with charge cable, controller is connected with the output of cable capacity testing circuit, the pwm signal of cable capacity testing circuit forwards holds the CP signal receiving end of the output and electric rifle that produce circuit with PWM to be respectively connected, controller is connected with a relay drive circuit, the input of one ic for energy metering is connected with the electrical energy inputs of relay, the output of ic for energy metering is connected with controller.
Described controller is STM32F103VET6_1 control chip, the input that CPPWM pin and the PWM of controller produce circuit is connected, the CPAD pin of controller is connected with the output of signal acquisition circuit, the CCAD pin of controller is connected with the output of cable capacity testing circuit, PB0 with the PB1 pin of controller is connected with relay drive circuit, TX2 with the DX2 pin of controller is connected with the output of ic for energy metering.
Described 12V voltage generation circuit comprises a 12V voltage generation circuit control chip, resistance R7 is connected with between the VIN pin of 12V voltage generation circuit control chip and EN pin, VIN pin is connected with the electric capacity C31 of ground connection, between VIN pin and SW pin, be connected with inductance L 5, VIN pin, the link of resistance R7 and VIN pin, electric capacity C31 be all connected with 5V power supply with the link of VIN pin with inductance L 5 with the link of VIN pin, the SW pin of 12V voltage generation circuit control chip is connected with a parallel connected end of double diode D5 with the double diode D4 of parallel connection, by No. 3 pin serial connection one electric capacity C25 of double diode D4 on double diode D4 branch road, by No. 3 pin serial connection one electric capacity C30 of double diode D5 on the branch road of double diode D5, the one parallel end connection ground of the resistance R5 after parallel connection, electric capacity C27 and electric capacity C28, the other end is connected with No. 1 pin of double diode D4, it is the output of-12V voltage, and No. 2 pin ground connection of double diode D4 are arranged, No. 1 pin ground connection of double diode D5 is arranged, electric capacity C32 in parallel is that a parallel connected end of the resistance R6 of 432k Ω is connected with No. 2 pins of double diode D5 with resistance, it is the output of+12V voltage, the other end is connected with the FB pin of 12V voltage generation circuit control chip, electric capacity C32 after parallel connection and resistance are be connected with the GND pin of 12V voltage generation circuit control chip after resistance R8 that resistance R6 and a resistance of 432k Ω is 49.9k Ω connects, electric capacity C33 in parallel and electric capacity C34 is connected with between No. 2 pins and the GND pin of 12V voltage generation circuit control chip of double diode D5, the GND pin of 12V voltage generation circuit control chip, resistance is resistance R8 and the GND pin link of 49.9k Ω, resistance is the resistance R6 of 432k Ω and GND pin link and electric capacity C33 and the equal ground connection of GND pin link.
Produce in electricity at 12V voltage, 12V voltage generation circuit chip is SC4503TSK TRT control chip, 12V voltage generation circuit operationally, 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 be 49.9K Ω R8 on voltage be 1.25V, be 0.025A by the electric current of resistance R8, the resistance be then in series with resistance R8 is one end that the resistance R6 of 432k Ω is connected with No. 2 pins of double diode D5 is 0.025A × (432 Ω+49.9 Ω)=12.07V, therefore the link voltage of No. 2 pins of resistance R6 and double diode D5 is+12V, it is+12V the voltage output end of 12V voltage generation circuit.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 No. 1 leads ends voltage of double diode D4 is-12V, and it is-12V the voltage output end of-12V voltage generation circuit.
Described PWM produces circuit and comprises a PWM generation circuit control chip, PWM produces the VF-pin of circuit control chip and is connected with the CPPWM pin of controller, VF+ pin is connected with power supply after being connected with a resistance R30, electric capacity C45 is in series with between VCC pin and GND pin, electric capacity C45 is connected with-12V the output of 12V voltage generation circuit with GND pin with the link of GND pin, resistance R32 parallel with one another and resistance R33 is connected with between VCC pin and VO pin, VCC pin, the link of resistance R32 and VCC pin, resistance R33 is all connected with+12V the output of 12V voltage generation circuit with the link of VCC pin with electric capacity C45 with the link of VCC pin, VO pin is connected with NPN triode Q3 parallel with one another and PNP triode Q5, the collector electrode of NPN triode Q3 is connected with+12V the output of 12V voltage generation circuit, the collector electrode of PNP triode Q5 is connected with-12V the output of 12V voltage generation circuit, connect after the emitter of NPN triode Q3 is connected with the emitter of PNP triode Q5 a resistance R35, the other end of resistance R35 is output.
Produce in circuit at PWM, it is HCPL2503 control chip that PWM produces circuit control chip, the CPPWM pin producing the controller that circuit control chip is connected with PWM produces low and high level, when high level inputs, the VO pin that PWM produces circuit control chip should be high level mutually, VO pin is to coupled two triode transmission high level parallel with one another, base stage conducting after receiving high level of NPN triode Q3, the base stage of PNP triode Q5 is ended after receiving high level, the voltage of the resistance R35 be now connected with the emitter of two triodes is+12V voltage, when low level inputs, the VO pin that PWM produces circuit control chip should be low level mutually, VO pin is to coupled two triode transmission low levels parallel with one another, the base stage of NPN triode Q3 is ended after receiving low level, base stage conducting after receiving high level of PNP triode Q5, the voltage of the resistance R35 be now connected with the emitter of two triodes is-12V voltage.
Described cable capacity testing circuit comprises a resistance R45, one end and the resistance R46 of resistance R45 are in series, another termination 5V voltage of resistance R45, one or two binding post is connected between R45 and R46, No. 1 binding post of two binding posts is that pwm signal forwards end, the CP signal receiving end that No. 1 binding post is produced on the output of circuit and charging gun by wire and PWM is connected, and No. 2 binding posts of two binding posts are connected by the CCAD pin of wire and controller and charge cable.
Also comprise LED circuit, LED circuit comprises red light control circuit, green light control circuit and blue lamp control circuit; Red light control circuit is connected with the PA4 pin of controller, and green light control circuit is connected with the PA5 pin of controller, and blue lamp control circuit is connected with the PA6 pin of controller.Described red light control circuit comprises a NPN triode Q1, be connected with the PA4 pin of controller after the base stage of NPN triode Q1 is connected with a resistance R16, a resistance R19 is connected between the base stage and emitter of NPN triode Q1, the grounded emitter of NPN triode Q1 is arranged, be connected to red light after the collector electrode of NPN triode Q1 is connected with a resistance R12, blue lamp control circuit is identical with the structure of red light control circuit with green light control circuit.
Described relay drive circuit comprises relay drive circuit N and relay drive circuit L, relay drive circuit N comprises a photoelectrical coupler U7, No. 1 pin of photoelectrical coupler U7 input is connected with supply voltage, No. 2 pins are connected with the PB0 pin of controller after connecting with a resistance R9, be connected with the base stage of a NPN triode Q2 after No. 4 pins of photoelectrical coupler U7 output are connected with a resistance R10, a resistance R12 is connected between resistance R10 and the emitter of NPN triode Q2, the grounded emitter of NPN triode Q2 is arranged, the collector electrode of NPN triode Q2 is connected with a drive end of relay K 2, another drive end of relay K 2 is connected after a resistance R4 and is connected with photoelectrical coupler U7 output No. 3 pins, No. 3 pins of photoelectrical coupler U7 output are connected with 12V supply voltage, relay drive circuit L comprises a photoelectrical coupler U6, No. 1 pin of photoelectrical coupler U6 input is connected with supply voltage, No. 2 pins are connected with the PB1 pin of controller after connecting with a resistance R51, be connected with the base stage of a NPN triode Q1 after No. 4 pins of photoelectrical coupler U6 output are connected with a resistance R51, a resistance R11 is connected between the emitter of R51 and NPN triode Q1, the grounded emitter of NPN triode Q1 is arranged, the collector electrode of NPN triode Q1 is connected with a drive end of relay K 1, another drive end of relay K 1 is connected after a resistance R3 and is connected with photoelectrical coupler U6 output No. 3 pins, No. 3 pins of photoelectrical coupler U6 output are connected with 12V supply voltage.
Also comprise a telecommunication circuit, also comprise a telecommunication circuit, described telecommunication circuit comprises a telecommunication circuit control chip, telecommunication circuit control chip is SIM900A control chip, the SIM900-TXD pin of telecommunication circuit control chip is connected with GPRS module serial communication circuit with SIM900-TXD pin, the TX4 of controller, TD4 pin is connected with GPRS module serial communication circuit, the Netlingt pin of telecommunication circuit control chip is connected with GPRS module status indicator lamp circuit with BAT pin, the start pin of telecommunication circuit control chip is connected with the output of SIM900 boot-strap circuit, the input of SIM900 boot-strap circuit is connected with the PE3 pin of controller, the SIMVCC pin of telecommunication circuit control chip, SIMRST pin, SIMCLK pin is connected with a sim card slot circuit with SIMDATA pin.
In telecommunication circuit, controller can control the opening and closing of telecommunication circuit by SIM900 boot-strap circuit, the parameter information of charging pile is sent to telecommunication circuit control chip by GPRS module serial communication circuit by controller, the operating state of present communications circuit can be shown by GPRS module status indicator lamp circuit, parameter information is sent to central control device by the form of GPRS signal by telecommunication circuit control chip, thus realize the running parameter that central control device learns each charging pile circuit in time, simultaneously also can by telecommunication circuit to each charging pile circuit sending controling instruction.
When charging pile be not connected with electric automobile be in holding state time, controller controls blue lamp Chang Liang by blue lamp control circuit.
Before the charging gun of charging pile is connected with electric automobile, the CPPWM pin of controller produces circuit to PWM to be continued to send high level, now PWM produces the CP signal input part of circuit is+12V, voltage signal is sent to controller by the signal acquisition circuit be connected with CP signal input part, controller receives+12V voltage signal, judge that current state is not-connected status, after charging gun is connected with electric automobile, if connect correct, then PWM produces after the output of circuit is connected with No. 1 binding post of the binding post of two in cable capacity testing circuit and is connected with electric automobile coupler, resistance on electric automobile coupler is increased to PWM and produces in the loop of circuit, now the voltage of resistance R35 reduces, voltage signal is sent to controller by the signal acquisition circuit be connected with CP signal input part, controller receives lower voltage signal, just can judge that current state is charging gun and electric automobile exact connect ion, when charging pile and electric automobile exact connect ion, controller controls green light flicker by green light control circuit.
Sentence after current state be charging gun and electric automobile exact connect ion at controller, PB0 and the PB1 pin of controller is low level, the photoelectrical coupler U7 be connected with PB0 with PB1 pin and U6 conducting, NPN triode Q2 in circuit and NPN triode Q1 conducting, now relay obtains electric switch adhesive, and charging pile starts to power to electric automobile.After charging pile starts to power to electric automobile, controller controls green light Chang Liang by green light control circuit, and ic for energy metering starts to calculate electric energy.
After charging pile starts to power to electric automobile, the cable resistance be connected with No. 2 binding posts of the binding post of two in cable capacity testing circuit is linked in cable capacity testing circuit, now the voltage of CCAD point raises, after controller receives the signal of CCAD point voltage rising, the specification of cable is judged by voltage signal, after controller receives CCAD point voltage signal, the lowest high-current value provided by charging pile according to concrete cable specification produces circuit by CPPWM pin to PWM and sends continuous low and high level, PWM produces circuit after receiving continuous low and high level, CP signal input part produces continuously ± 12V pulse signal, electric automobile receiving ± 12V pulse signal after, the size of charging current can be learnt 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, then 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, then electric automobile does not accept charging.
Resistance on electric automobile coupler is no longer increased to PWM and produces in the loop of circuit, now the voltage resume of resistance R35 is to original numerical value, voltage signal is sent to controller by signal acquisition circuit, controller receives the voltage signal of R35, can judge that current state is that charging pile is connected with electric automobile is incorrect, controller controls red light Chang Liang by red light control circuit.
When after relay conducting, ic for energy metering starts metering charging institute power consumption energy, and electric flux is sent to controller.
Adopt wall-hanging charging pile circuit of the present utility model, reasonable in design, in charging pile circuit, signalization Acquisition Circuit, PWM produce circuit and cable capacity detection circuit, whether signal acquisition circuit and PWM generation circuit can detect charge cable and be connected correctly with electric automobile, when after exact connect ion, charging pile opens charging again, avoid charging pile just to carry out charging when not being connected correct with cable and cause charging accident, eliminate potential safety hazard; In addition, PWM produces the charging current notice electric motor car that charging pile can be provided by the form of pwm pulse by circuit, if the charging current that charging pile provides is excessive, electric automobile does not just accept charging, avoids the generation of security incident.
The utility model does not describe part in detail, is the known technology of those skilled in the art of the present technique.
Claims (8)
1. a wall-hanging charging pile circuit, it is characterized in that: comprise a controller, controller and PWM produce circuit and are connected,-12V the voltage controling end that-12V voltage output end and the PWM of one 12V voltage generation circuit produce circuit is connected, + 12V the voltage controling end that+12V voltage output end and the PWM of 12V voltage generation circuit produce circuit is connected, the output that input and the PWM of one signal acquisition circuit produce circuit is connected, 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 holds the CP signal receiving end of the output and charging gun that produce circuit with PWM to be respectively connected, controller is connected with a relay drive circuit, the input of one ic for energy metering is connected with the electrical energy inputs of relay, the output of ic for energy metering is connected with controller.
2. the wall-hanging charging pile circuit of one according to claim 1, it is characterized in that: described controller is STM32F103VET6_1 control chip, the input that CPPWM pin and the PWM of controller produce circuit is connected, the CPAD pin of controller is connected with the output of signal acquisition circuit, the CCAD pin of controller is connected with the output of cable capacity testing circuit, PB0 with the PB1 pin of controller is connected with relay drive circuit, TX2 with the DX2 pin of controller is connected with the output of ic for energy metering.
3. the wall-hanging charging pile circuit of one according to claim 1, it is characterized in that: described 12V voltage generation circuit comprises a 12V voltage generation circuit control chip, resistance R7 is connected with between the VIN pin of 12V voltage generation circuit control chip and EN pin, VIN pin is connected with the electric capacity C31 of ground connection, between VIN pin and SW pin, be connected with inductance L 5, VIN pin, the link of resistance R7 and VIN pin, electric capacity C31 be all connected with 5V power supply with the link of VIN pin with inductance L 5 with the link of VIN pin, the SW pin of 12V voltage generation circuit control chip is connected with a parallel connected end of double diode D5 with the double diode D4 of parallel connection, by No. 3 pin serial connection one electric capacity C25 of double diode D4 on double diode D4 branch road, by No. 3 pin serial connection one electric capacity C30 of double diode D5 on the branch road of double diode D5, the one parallel end connection ground of the resistance R5 after parallel connection, electric capacity C27 and electric capacity C28, the other end is connected with No. 1 pin of double diode D4, it is the output of-12V voltage, and No. 2 pin ground connection of double diode D4 are arranged, No. 1 pin ground connection of double diode D5 is arranged, electric capacity C32 in parallel is that a parallel connected end of the resistance R6 of 432k Ω is connected with No. 2 pins of double diode D5 with resistance, it is the output of+12V voltage, the other end is connected with the FB pin of 12V voltage generation circuit control chip, electric capacity C32 after parallel connection and resistance are be connected with the GND pin of 12V voltage generation circuit control chip after resistance R8 that resistance R6 and a resistance of 432k Ω is 49.9k Ω connects, electric capacity C33 in parallel and electric capacity C34 is connected with between No. 2 pins and the GND pin of 12V voltage generation circuit control chip of double diode D5, the GND pin of 12V voltage generation circuit control chip, resistance is resistance R8 and the GND pin link of 49.9k Ω, resistance is the resistance R6 of 432k Ω and GND pin link and electric capacity C33 and the equal ground connection of GND pin link.
4. the wall-hanging charging pile circuit of one according to claim 2, it is characterized in that: described PWM produces circuit and comprises a PWM generation circuit control chip, PWM produces the VF-pin of circuit control chip and is connected with the CPPWM pin of controller, VF+ pin is connected with power supply after being connected with a resistance R30, electric capacity C45 is in series with between VCC pin and GND pin, electric capacity C45 is connected with-12V the output of 12V voltage generation circuit with GND pin with the link of GND pin, resistance R32 parallel with one another and resistance R33 is connected with between VCC pin and VO pin, VCC pin, the link of resistance R32 and VCC pin, resistance R33 is all connected with+12V the output of 12V voltage generation circuit with the link of VCC pin with electric capacity C45 with the link of VCC pin, VO pin is connected with NPN triode Q3 parallel with one another and PNP triode Q5, the collector electrode of NPN triode Q3 is connected with+12V the output of 12V voltage generation circuit, the collector electrode of PNP triode Q5 is connected with-12V the output of 12V voltage generation circuit, connect after the emitter of NPN triode Q3 is connected with the emitter of PNP triode Q5 a resistance R35, the other end of resistance R35 is the output that PWM produces circuit.
5. the wall-hanging charging pile circuit of one according to claim 2, it is characterized in that: described cable capacity testing circuit comprises a resistance R45, one end and the resistance R46 of resistance R45 are in series, another termination 5V voltage of resistance R45, one or two binding post is connected between R45 and R46, No. 1 binding post of two binding posts is that pwm signal forwards end, the CP signal receiving end that No. 1 binding post is produced on the output of circuit and charging gun by wire and PWM is connected, and No. 2 binding posts of two binding posts are connected by the CCAD pin of wire and controller and charge cable.
6. the wall-hanging charging pile circuit of one according to claim 2, is characterized in that: also comprise LED circuit, and LED circuit comprises red light control circuit, green light control circuit and blue lamp control circuit; Red light control circuit is connected with the PA4 pin of controller, and green light control circuit is connected with the PA5 pin of controller, and blue lamp control circuit is connected with the PA6 pin of controller.
7. the wall-hanging charging pile circuit of one according to claim 2, it is characterized in that: described relay drive circuit comprises relay drive circuit N and relay drive circuit L, relay drive circuit N comprises a photoelectrical coupler U7, No. 1 pin of photoelectrical coupler U7 input is connected with supply voltage, No. 2 pins are connected with the PB0 pin of controller after connecting with a resistance R9, be connected with the base stage of a NPN triode Q2 after No. 4 pins of photoelectrical coupler U7 output are connected with a resistance R10, a resistance R12 is connected between resistance R10 and the emitter of NPN triode Q2, the grounded emitter of NPN triode Q2 is arranged, the collector electrode of NPN triode Q2 is connected with a drive end of relay K 2, another drive end of relay K 2 is connected after a resistance R4 and is connected with photoelectrical coupler U7 output No. 3 pins, No. 3 pins of photoelectrical coupler U7 output are connected with 12V supply voltage, relay drive circuit L comprises a photoelectrical coupler U6, No. 1 pin of photoelectrical coupler U6 input is connected with supply voltage, No. 2 pins are connected with the PB1 pin of controller after connecting with a resistance R51, be connected with the base stage of a NPN triode Q1 after No. 4 pins of photoelectrical coupler U6 output are connected with a resistance R51, a resistance R11 is connected between the emitter of R51 and NPN triode Q1, the grounded emitter of NPN triode Q1 is arranged, the collector electrode of NPN triode Q1 is connected with a drive end of relay K 1, another drive end of relay K 1 is connected after a resistance R3 and is connected with photoelectrical coupler U6 output No. 3 pins, No. 3 pins of photoelectrical coupler U6 output are connected with 12V supply voltage.
8. the wall-hanging charging pile circuit of one according to claim 2, it is characterized in that: also comprise a telecommunication circuit, described telecommunication circuit comprises a telecommunication circuit control chip, telecommunication circuit control chip is SIM900A control chip, the SIM900-TXD pin of telecommunication circuit control chip is connected with GPRS module serial communication circuit with SIM900-TXD pin, the TX4 of controller, TD4 pin is connected with GPRS module serial communication circuit, the Netlingt pin of telecommunication circuit control chip is connected with GPRS module status indicator lamp circuit with BAT pin, the START pin of telecommunication circuit control chip is connected with the output of SIM900 boot-strap circuit, the input of SIM900 boot-strap circuit is connected with the PE3 pin of controller, the SIMVCC pin of telecommunication circuit control chip, SIMRST pin, SIMCLK pin is connected with a sim card slot circuit with SIMDATA pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420496999.9U CN204030687U (en) | 2014-08-29 | 2014-08-29 | A kind of wall-hanging charging pile circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420496999.9U CN204030687U (en) | 2014-08-29 | 2014-08-29 | A kind of wall-hanging charging pile circuit |
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| CN204030687U true CN204030687U (en) | 2014-12-17 |
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| CN201420496999.9U Expired - Fee Related CN204030687U (en) | 2014-08-29 | 2014-08-29 | A kind of wall-hanging charging pile circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105375572A (en) * | 2015-11-26 | 2016-03-02 | 上海循道新能源科技有限公司 | Intelligent detection device for electric automobile AC charging pile |
| CN105743192A (en) * | 2016-04-01 | 2016-07-06 | 江苏万帮德和新能源科技有限公司 | Control circuit and control method for internet intelligent AC charging pile |
-
2014
- 2014-08-29 CN CN201420496999.9U patent/CN204030687U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105375572A (en) * | 2015-11-26 | 2016-03-02 | 上海循道新能源科技有限公司 | Intelligent detection device for electric automobile AC charging pile |
| CN105375572B (en) * | 2015-11-26 | 2018-04-24 | 上海循道新能源科技有限公司 | A kind of intelligent detection device of electric vehicle alternating-current charging pile |
| CN105743192A (en) * | 2016-04-01 | 2016-07-06 | 江苏万帮德和新能源科技有限公司 | Control circuit and control method for internet intelligent AC charging pile |
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