CN204156580U - A kind of wall-hanging charging pile circuit with protective circuit and filter circuit - Google Patents
A kind of wall-hanging charging pile circuit with protective circuit and filter circuit Download PDFInfo
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- CN204156580U CN204156580U CN201420693609.7U CN201420693609U CN204156580U CN 204156580 U CN204156580 U CN 204156580U CN 201420693609 U CN201420693609 U CN 201420693609U CN 204156580 U CN204156580 U CN 204156580U
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Abstract
A kind of wall-hanging charging pile circuit with protective circuit and filter 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, and controller is connected with the output of signal acquisition circuit.The utility model adopts such scheme, reasonable in design, in the power circuit of controller, power protecting circuit is set, effectively prevent the damage caused in the situations such as overvoltage, overcurrent, surge, electromagnetic interference components and parts, ensure that charging pile circuit safety uses, greatly reduce maintenance and repair cost; In addition, filter circuit is set in circuit, ensure that signal stabilization, make charging pile circuit judges accurate, bring convenience to the users.
Description
Technical field:
The utility model relates to a kind of wall-hanging charging pile circuit with protective circuit and filter 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, mostly structure is simple for charging pile circuit on the market, the power circuit of controller lacks protective circuit, the damage of components and parts is easily there is in the situations such as overvoltage, overcurrent, surge, electromagnetic interference, damage is caused to charging pile circuit, impact is normal to be used, and considerably increases maintenance and repair cost; In addition, in circuit, lack filter circuit, cause jitter, especially circuit and ic for energy metering are produced for cable capacity testing circuit, PWM, jitter easily causes judgement to go wrong, and affects the normal work of charging pile circuit, and using to user makes troubles.
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 with protective circuit and filter circuit, its reasonable in design, in the power circuit of controller, power protecting circuit is set, effectively prevent the damage caused in the situations such as overvoltage, overcurrent, surge, electromagnetic interference components and parts, ensure that charging pile circuit safety uses, greatly reduce maintenance and repair cost; In addition, filter circuit is set in circuit, ensure that signal stabilization, make charging pile circuit judges accurate, bring convenience to the users, 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 with protective circuit and filter 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, one is connected with charging cable with the input of the cable capacity testing circuit of filter circuit, controller is connected with the output of the cable capacity testing circuit with filter circuit, pwm signal with the cable capacity testing circuit of filter circuit forwards holds the CP holding wire of the output and charging cable that produce circuit with PWM to be respectively connected, controller is connected with a relay drive circuit, one is connected with the electrical energy inputs of relay with the input of the ic for energy metering of filter circuit, output with the ic for energy metering of filter circuit is connected with controller, one 220V power supply is connected with the input of a 220V power protecting circuit, the output of 220V power protecting circuit is connected with the input that a 12V exports switched filter circuit with relay respectively, 12V exports the output of switched filter circuit and is connected with the power pins of 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 the cable capacity testing circuit with filter 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 the ic for energy metering with filter circuit.
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 the output that PWM produces circuit.
The described cable capacity testing circuit with filter circuit comprises a resistance R58, one end and the resistance R59 of resistance R58 are in series, another termination 5V voltage of resistance R58, the other end ground connection of resistance R59 is arranged, magnetic bead CZ2 and the electric capacity C61 of series connection is mutually parallel with at the two ends of resistance R58, one end of one magnetic bead CZ6 is connected between magnetic bead CZ2 and R59, the other end of magnetic bead CZ6 is connected with the CCAD pin of controller, one TVS pipe TVS4 is connected in parallel on the two ends of electric capacity C61, electric capacity C61, TVS pipe TVS4 is connected with No. 1 binding post of one or two binding post with the link of magnetic bead CZ2, one magnetic bead CZ1 is connected with No. 2 binding posts of two binding posts, the output that the other end and the PWM of magnetic bead CZ1 produce circuit is connected, between earth terminal, an electric capacity C62 is provided with near one end of binding post and resistance R59 at magnetic bead CZ1, a TVS pipe TVS3 in parallel at the two ends of C62, No. 1 binding post is connected with the CP signal receiving end on charging gun, with the control of charge cable, No. 2 binding posts confirm that CP line is connected.
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.
Described 220V power protecting circuit comprises and is successively set on common mode inductance L9 between power supply N line and power supply L line and common mode inductance L10, an X electric capacity CX1 is being provided with between the power supply N line and power supply L line of common mode inductance L9 power input side, an X electric capacity CX2 is being provided with between the power supply N line and power supply L line of common mode inductance L10220V power protecting circuit output end, a piezo-resistance RV1 in parallel at the two ends of X electric capacity CX1, piezo-resistance RV2 and the piezo-resistance RV3 of series connection is mutually parallel with at the two ends of piezo-resistance RV1, one end of one gas discharge tube A1 is connected between piezo-resistance RV2 and piezo-resistance RV3, the other end ground connection of gas discharge tube A1, power supply N line between common mode inductance L9 and common mode inductance L10 and be provided with Y capacitance CY1 and the Y capacitance CY of mutually series connection between power supply L line, the link ground connection of Y capacitance CY1 and Y capacitance CY is arranged.
Described 12V exports switched filter circuit and comprises a 12V conversion chip, described 12V conversion chip is LH25-10B12 chip, the input pin N of 12V conversion chip is connected with output L line with the output N line of 220V power protecting circuit respectively with input pin L, between-VO the pin and+VO pin of 12V conversion chip, be provided with one have polar capacitor E1, there iing the two ends of a polar capacitor E1 electric capacity C66 in parallel, one end of one inductance L 11 is connected with+VO pin, the other end of inductance L 11 is connected with an electric capacity C67, the link of inductance L 11 and electric capacity C67 is the output that 2V exports switched filter circuit, the other end of electric capacity C67 is connected with-VO pin,-VO pin ground connection is arranged.
The described ic for energy metering with filter circuit comprises an electric energy computation chip, described electric energy computation chip is LT-135 chip, one end of one inductance L 7 is connected with the VL pin of electric energy computation chip, the other end of inductance L 7 is connected with the electrical energy inputs L line of relay, one end of one magnetic bead CZ3 is connected with the RX pin of electric energy computation chip, the other end of magnetic bead CZ3 is connected with the RX2 pin of controller, the electric capacity C64 that a ground connection is arranged is provided with between magnetic bead CZ3 and the RX2 pin of controller, one end of one magnetic bead CZ4 is connected with the TX pin of electric energy computation chip, the other end of magnetic bead CZ4 is connected with the TX2 pin of controller, the electric capacity C65 that a ground connection is arranged is provided with between magnetic bead CZ4 and the TX2 pin of controller, the power pins of electric energy computation chip is connected with+5V voltage, the GND pin ground connection of electric energy computation chip is arranged, power pins is provided with the electric capacity C63 that a ground connection is arranged, one end of one inductance L 8 is connected with the VN pin of electric energy computation chip, the other end of inductance L 8 is connected with the electrical energy inputs N line of relay.
Described CANJ interface filter circuit comprises a CAN transceiver, described CAN transceiver is 82C250 chip, the TXD pin of CAN transceiver is connected with the CANT pin of controller chip, the RXD pin of CAN transceiver is connected with the CANR pin of control chip, CANH output line is connected with at the CANH pin of CAN transceiver, CANL output line is connected with at CANL pin, the outer end of CANH output line is connected with bus with the outer end of CANL output line, an inductance L 6 is provided with between CANH output line and CANL output line, a resistance R56 is provided with near between the CANH output line and CANL output line of CAN transceiver side in inductance L 6, in inductance L 6 away from the electric capacity C60 and the electric capacity C59 that are provided with series connection mutually between the CANH output line of CAN transceiver side and CANL output line, TVS pipe TVS1 and the TVS pipe TVS2 of series connection is mutually parallel with at the two ends of the electric capacity C60 mutually connected and electric capacity C59, the link ground connection of electric capacity C60 and electric capacity C59 is arranged, the link ground connection of TVS pipe TVS1 and TVS pipe TVS2 is arranged.
The utility model adopts such scheme, reasonable in design, in the power circuit of controller, power protecting circuit is set, effectively prevent the damage caused in the situations such as overvoltage, overcurrent, surge, electromagnetic interference components and parts, ensure that charging pile circuit safety uses, greatly reduce maintenance and repair cost; In addition, filter circuit is set in circuit, ensure that signal stabilization, make charging pile circuit judges accurate, bring convenience to the users.
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 with the cable capacity testing circuit of filter circuit.
Fig. 5 is the circuit diagram of the utility model 220V power protecting circuit.
Fig. 6 is the circuit diagram that the utility model 12V exports switched filter circuit.
Fig. 7 is the circuit diagram of the utility model with the ic for energy metering of filter circuit.
Fig. 8 is the circuit diagram of CAN interface filter circuit of the present utility model.
Fig. 9 is the circuit diagram of relay drive circuit N of the present utility model.
Figure 10 is the circuit diagram of relay drive circuit L 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 Figure 1-10 shows: a kind of wall-hanging charging pile circuit with protective circuit and filter 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, one is connected with charging cable with the input of the cable capacity testing circuit of filter circuit, controller is connected with the output of the cable capacity testing circuit with filter circuit, pwm signal with the cable capacity testing circuit of filter circuit forwards holds the CP holding wire of the output and charging cable that produce circuit with PWM to be respectively connected, controller is connected with a relay drive circuit, one is connected with the electrical energy inputs of relay with the input of the ic for energy metering of filter circuit, output with the ic for energy metering of filter circuit is connected with controller, one 220V power supply is connected with the input of a 220V power protecting circuit, the output of 220V power protecting circuit is connected with the input that a 12V exports switched filter circuit with relay respectively, 12V exports the output of switched filter circuit and is connected with the power pins of 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 the cable capacity testing circuit with filter 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 the ic for energy metering with filter circuit.
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 the output that PWM produces circuit.
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.
The described cable capacity testing circuit with filter circuit comprises a resistance R58, one end and the resistance R59 of resistance R58 are in series, another termination 5V voltage of resistance R58, the other end ground connection of resistance R59 is arranged, magnetic bead CZ2 and the electric capacity C61 of series connection is mutually parallel with at the two ends of resistance R58, one end of one magnetic bead CZ6 is connected between magnetic bead CZ2 and R59, the other end of magnetic bead CZ6 is connected with the CCAD pin of controller, one TVS pipe TVS4 is connected in parallel on the two ends of electric capacity C61, electric capacity C61, TVS pipe TVS4 is connected with No. 1 binding post of one or two binding post with the link of magnetic bead CZ2, one magnetic bead CZ1 is connected with No. 2 binding posts of two binding posts, the output that the other end and the PWM of magnetic bead CZ1 produce circuit is connected, between earth terminal, an electric capacity C62 is provided with near one end of binding post and resistance R59 at magnetic bead CZ1, a TVS pipe TVS3 in parallel at the two ends of C62, No. 1 binding post is connected with the CP signal receiving end on charging gun, with the control of charge cable, No. 2 binding posts confirm that CP line is connected.
With in the cable capacity testing circuit of filter circuit, the two ends of TVS pipe TVS3 and TVS pipe TVS4 are when standing the high energy impact events of moment, its impedance can be made suddenly to reduce with high speed, simultaneously stability big current, the voltage clamp at its two ends is numerically predetermined at one, thus guarantee that circuit element is below exempted from the high-octane impact of transient state and damages.Magnetic bead CZ1 and magnetic bead CZ2 can suppress high-frequency noise and the spike interference of CP signal and CCAD signal, also has the ability absorbing electrostatic pulse.Electric capacity C61 and electric capacity C62 can start the effect of filtering, with AC portion unwanted in filtering DC power supply, direct current is flattened cunning.
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.
Described 220V power protecting circuit comprises and is successively set on common mode inductance L9 between power supply N line and power supply L line and common mode inductance L10, an X electric capacity CX1 is being provided with between the power supply N line and power supply L line of common mode inductance L9 power input side, an X electric capacity CX2 is being provided with between the power supply N line and power supply L line of common mode inductance L10220V power protecting circuit output end, a piezo-resistance RV1 in parallel at the two ends of X electric capacity CX1, piezo-resistance RV2 and the piezo-resistance RV3 of series connection is mutually parallel with at the two ends of piezo-resistance RV1, one end of one gas discharge tube A1 is connected between piezo-resistance RV2 and piezo-resistance RV3, the other end ground connection of gas discharge tube A1, power supply N line between common mode inductance L9 and common mode inductance L10 and be provided with Y capacitance CY1 and the Y capacitance CY of mutually series connection between power supply L line, the link ground connection of Y capacitance CY1 and Y capacitance CY is arranged.
In 220V power protecting circuit, piezo-resistance RV1, piezo-resistance RV2 and piezo-resistance RV3, can bear extension at circuit is carry out voltage clamp, absorbs unnecessary electric current to protect Sensitive Apparatus.Gas discharge tube A1 can release the effect of Lightning Transient overcurrent and over-voltage.X electric capacity CX1 and X electric capacity CX2 can play power filter effect, and to the filter action of differential mode interference device, Y capacitance can play the effect of filtering to common mode disturbances.The electromagnetic wave outside radiation that common mode inductance L9 and common mode inductance L10 can suppress HW High Way to produce.
Described 12V exports switched filter circuit and comprises a 12V conversion chip, described 12V conversion chip is LH25-10B12 chip, the input pin N of 12V conversion chip is connected with output L line with the output N line of 220V power protecting circuit respectively with input pin L, between-VO the pin and+VO pin of 12V conversion chip, be provided with one have polar capacitor E1, there iing the two ends of a polar capacitor E1 electric capacity C66 in parallel, one end of one inductance L 11 is connected with+VO pin, the other end of inductance L 11 is connected with an electric capacity C67, the link of inductance L 11 and electric capacity C67 is the output that 2V exports switched filter circuit, the other end of electric capacity C67 is connected with-VO pin,-VO pin ground connection is arranged.
12V export in switched filter circuit have polar capacitor E1, electric capacity C1 and inductance L 11 can filtering LH25-10B12 module to the interference of circuit.
The described ic for energy metering with filter circuit comprises an electric energy computation chip, described electric energy computation chip is LT-135 chip, one end of one inductance L 7 is connected with the VL pin of electric energy computation chip, the other end of inductance L 7 is connected with the electrical energy inputs L line of relay, one end of one magnetic bead CZ3 is connected with the RX pin of electric energy computation chip, the other end of magnetic bead CZ3 is connected with the RX2 pin of controller, the electric capacity C64 that a ground connection is arranged is provided with between magnetic bead CZ3 and the RX2 pin of controller, one end of one magnetic bead CZ4 is connected with the TX pin of electric energy computation chip, the other end of magnetic bead CZ4 is connected with the TX2 pin of controller, the electric capacity C65 that a ground connection is arranged is provided with between magnetic bead CZ4 and the TX2 pin of controller, the power pins of electric energy computation chip is connected with+5V voltage, the GND pin ground connection of electric energy computation chip is arranged, power pins is provided with the electric capacity C63 that a ground connection is arranged, one end of one inductance L 8 is connected with the VN pin of electric energy computation chip, the other end of inductance L 8 is connected with the electrical energy inputs N line of relay.
With in the ic for energy metering of filter circuit, magnetic bead CZ3 and magnetic bead CZ4 can high-frequency noise always on holding wire RX-LT135 and TX-LT135 and spike interference, also has the effect absorbing electrostatic pulse.Electric capacity C63, electric capacity C64 and electric capacity C65 can unwanted alternating components in filtering DC power supply, are that holding wire communication is more stable.
Described CAN interface filter circuit, comprise a CAN transceiver, described CAN transceiver is 82C250 chip, the TXD pin of CAN transceiver is connected with the CANT pin of controller chip, the RXD pin of CAN transceiver is connected with the CANR pin of control chip, CANH output line is connected with at the CANH pin of CAN transceiver, CANL output line is connected with at CANL pin, the outer end of CANH output line is connected with bus with the outer end of CANL output line, an inductance L 6 is provided with between CANH output line and CANL output line, a resistance R56 is provided with near between the CANH output line and CANL output line of CAN transceiver side in inductance L 6, in inductance L 6 away from the electric capacity C60 and the electric capacity C59 that are provided with series connection mutually between the CANH output line of CAN transceiver side and CANL output line, TVS pipe TVS1 and the TVS pipe TVS2 of series connection is mutually parallel with at the two ends of the electric capacity C60 mutually connected and electric capacity C59, the link ground connection of electric capacity C60 and electric capacity C59 is arranged, the link ground connection of TVS pipe TVS1 and TVS pipe TVS2 is arranged.
In CAN interface filter circuit, the electromagnetic wave outside radiation that common mode inductance L6 can suppress HW High Way to produce, electric capacity C60 and electric capacity C59 can unwanted alternating component in filtering CANH output line and CANL output line, makes direct current become level and smooth.
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.
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, the ic for energy metering with filter circuit starts to calculate electric energy.
Adopt the wall-hanging charging pile circuit with protective circuit and filter circuit of the present utility model, reasonable in design, in the power circuit of controller, power protecting circuit is set, effectively prevent the damage caused in the situations such as overvoltage, overcurrent, surge, electromagnetic interference components and parts, ensure that charging pile circuit safety uses, greatly reduce maintenance and repair cost; In addition, filter circuit is set in circuit, ensure that signal stabilization, make charging pile circuit judges accurate, bring convenience to the users.
The utility model does not describe part in detail, is the known technology of those skilled in the art of the present technique.
Claims (10)
1. the wall-hanging charging pile circuit with protective circuit and filter 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, one is connected with charging cable with the input of the cable capacity testing circuit of filter circuit, controller is connected with the output of the cable capacity testing circuit with filter circuit, pwm signal with the cable capacity testing circuit of filter circuit forwards holds the CP holding wire of the output and charging cable that produce circuit with PWM to be respectively connected, controller is connected with a relay drive circuit, one is connected with the electrical energy inputs of relay with the input of the ic for energy metering of filter circuit, output with the ic for energy metering of filter circuit is connected with controller, one 220V power supply is connected with the input of a 220V power protecting circuit, the output of 220V power protecting circuit is connected with the input that a 12V exports switched filter circuit with relay respectively, 12V exports the output of switched filter circuit and is connected with the power pins of controller.
2. a kind of wall-hanging charging pile circuit with protective circuit and filter circuit 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 the cable capacity testing circuit with filter 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 the ic for energy metering with filter circuit.
3. a kind of wall-hanging charging pile circuit with protective circuit and filter circuit 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. a kind of wall-hanging charging pile circuit with protective circuit and filter circuit 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. a kind of wall-hanging charging pile circuit with protective circuit and filter circuit according to claim 2, it is characterized in that: the described cable capacity testing circuit with filter circuit comprises a resistance R58, one end and the resistance R59 of resistance R58 are in series, another termination 5V voltage of resistance R58, the other end ground connection of resistance R59 is arranged, magnetic bead CZ2 and the electric capacity C61 of series connection is mutually parallel with at the two ends of resistance R58, one end of one magnetic bead CZ6 is connected between magnetic bead CZ2 and R59, the other end of magnetic bead CZ6 is connected with the CCAD pin of controller, one TVS pipe TVS4 is connected in parallel on the two ends of electric capacity C61, electric capacity C61, TVS pipe TVS4 is connected with No. 1 binding post of one or two binding post with the link of magnetic bead CZ2, one magnetic bead CZ1 is connected with No. 2 binding posts of two binding posts, the output that the other end and the PWM of magnetic bead CZ1 produce circuit is connected, between earth terminal, an electric capacity C62 is provided with near one end of binding post and resistance R59 at magnetic bead CZ1, a TVS pipe TVS3 in parallel at the two ends of C62, No. 1 binding post is connected with the CP signal receiving end on charging gun, with the control of charge cable, No. 2 binding posts confirm that CP line is connected.
6. a kind of wall-hanging charging pile circuit with protective circuit and filter circuit 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.
7. a kind of wall-hanging charging pile circuit with protective circuit and filter circuit according to claim 2, it is characterized in that: described 220V power protecting circuit comprises and is successively set on common mode inductance L9 between power supply N line and power supply L line and common mode inductance L10, an X electric capacity CX1 is being provided with between the power supply N line and power supply L line of common mode inductance L9 power input side, an X electric capacity CX2 is being provided with between the power supply N line and power supply L line of common mode inductance L10220V power protecting circuit output end, a piezo-resistance RV1 in parallel at the two ends of X electric capacity CX1, piezo-resistance RV2 and the piezo-resistance RV3 of series connection is mutually parallel with at the two ends of piezo-resistance RV1, one end of one gas discharge tube A1 is connected between piezo-resistance RV2 and piezo-resistance RV3, the other end ground connection of gas discharge tube A1, power supply N line between common mode inductance L9 and common mode inductance L10 and be provided with Y capacitance CY1 and the Y capacitance CY of mutually series connection between power supply L line, the link ground connection of Y capacitance CY1 and Y capacitance CY is arranged.
8. a kind of wall-hanging charging pile circuit with protective circuit and filter circuit according to claim 2, it is characterized in that: described 12V exports switched filter circuit and comprises a 12V conversion chip, described 12V conversion chip is LH25-10B12 chip, the input pin N of 12V conversion chip is connected with output L line with the output N line of 220V power protecting circuit respectively with input pin L, between-VO the pin and+VO pin of 12V conversion chip, be provided with one have polar capacitor E1, there iing the two ends of a polar capacitor E1 electric capacity C66 in parallel, one end of one inductance L 11 is connected with+VO pin, the other end of inductance L 11 is connected with an electric capacity C67, the link of inductance L 11 and electric capacity C67 is the output that 2V exports switched filter circuit, the other end of electric capacity C67 is connected with-VO pin,-VO pin ground connection is arranged.
9. a kind of wall-hanging charging pile circuit with protective circuit and filter circuit according to claim 2, it is characterized in that: the described ic for energy metering with filter circuit comprises an electric energy computation chip, described electric energy computation chip is LT-135 chip, one end of one inductance L 7 is connected with the VL pin of electric energy computation chip, the other end of inductance L 7 is connected with the electrical energy inputs L line of relay, one end of one magnetic bead CZ3 is connected with the RX pin of electric energy computation chip, the other end of magnetic bead CZ3 is connected with the RX2 pin of controller, the electric capacity C64 that a ground connection is arranged is provided with between magnetic bead CZ3 and the RX2 pin of controller, one end of one magnetic bead CZ4 is connected with the TX pin of electric energy computation chip, the other end of magnetic bead CZ4 is connected with the TX2 pin of controller, the electric capacity C65 that a ground connection is arranged is provided with between magnetic bead CZ4 and the TX2 pin of controller, the power pins of electric energy computation chip is connected with+5V voltage, the GND pin ground connection of electric energy computation chip is arranged, power pins is provided with the electric capacity C63 that a ground connection is arranged, one end of one inductance L 8 is connected with the VN pin of electric energy computation chip, the other end of inductance L 8 is connected with the electrical energy inputs N line of relay.
10. a kind of wall-hanging charging pile circuit with protective circuit and filter circuit according to claim 2, it is characterized in that: described CAN interface filter circuit comprises a CAN transceiver, described CAN transceiver is 82C250 chip, the TXD pin of CAN transceiver is connected with the CANT pin of controller chip, the RXD pin of CAN transceiver is connected with the CANR pin of control chip, CANH output line is connected with at the CANH pin of CAN transceiver, CANL output line is connected with at CANL pin, the outer end of CANH output line is connected with bus with the outer end of CANL output line, an inductance L 6 is provided with between CANH output line and CANL output line, a resistance R56 is provided with near between the CANH output line and CANL output line of CAN transceiver side in inductance L 6, in inductance L 6 away from the electric capacity C60 and the electric capacity C59 that are provided with series connection mutually between the CANH output line of CAN transceiver side and CANL output line, TVS pipe TVS1 and the TVS pipe TVS2 of series connection is mutually parallel with at the two ends of the electric capacity C60 mutually connected and electric capacity C59, the link ground connection of electric capacity C60 and electric capacity C59 is arranged, the link ground connection of TVS pipe TVS1 and TVS pipe TVS2 is arranged.
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|---|---|---|---|
| CN201420693609.7U CN204156580U (en) | 2014-11-18 | 2014-11-18 | A kind of wall-hanging charging pile circuit with protective circuit and filter circuit |
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| CN201420693609.7U CN204156580U (en) | 2014-11-18 | 2014-11-18 | A kind of wall-hanging charging pile circuit with protective circuit and filter circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106526399A (en) * | 2016-11-07 | 2017-03-22 | 深圳巴斯巴科技发展有限公司 | Grounding and phase dislocation detection circuit of new energy vehicle charging box |
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- 2014-11-18 CN CN201420693609.7U patent/CN204156580U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106526399A (en) * | 2016-11-07 | 2017-03-22 | 深圳巴斯巴科技发展有限公司 | Grounding and phase dislocation detection circuit of new energy vehicle charging box |
| CN106526399B (en) * | 2016-11-07 | 2023-08-08 | 深圳巴斯巴科技发展有限公司 | New energy automobile charging box's ground connection and wrong looks detection circuitry |
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