CN214984926U

CN214984926U - Intelligent charging stake with earth leakage protection device

Info

Publication number: CN214984926U
Application number: CN202121586953.2U
Authority: CN
Inventors: 彭义华
Original assignee: Ruizhuang Shanghai New Energy Technology Co ltd
Current assignee: Ruizhuang Shanghai New Energy Technology Co ltd
Priority date: 2021-07-13
Filing date: 2021-07-13
Publication date: 2021-12-03
Anticipated expiration: 2031-07-13

Abstract

An intelligent charging pile with an electric leakage protection device comprises a charging pile body, a voltage-stabilized power supply, an LED display screen, an electric leakage detection switching circuit, a short message sending circuit, a wireless signal sending circuit and a wireless signal receiving circuit; constant voltage power supply, LED display screen, electric leakage detection switch circuit, SMS transmitting circuit, wireless signal transmitting circuit install and fill electric pile this internal and electric connection in electric pile, and wireless signal receiving circuit has many sets. This novel can automatic disconnection fill electric pile body's total input power when filling electric pile body and taking place the electric leakage, and the accessible LED display screen visual display electric leakage condition arouses the attention of the person that charges, can maintain as early as possible for relevant managers' mobile phone propelling movement SMS suggestion during the electric leakage, the risk of the person that charges electrocutes has been reduced, can also indicate the vehicle that is close when can not provide the function of charging, reduced can not charge and reach under the regional road of charging not unblocked the condition, the vehicle drives into the charging area and brings unnecessary trouble for vehicle driver.

Description

Intelligent charging stake with earth leakage protection device

Technical Field

The utility model relates to an automobile-used electric pile equipment technical field that fills especially an intelligent charging stake with earth leakage protection device.

Background

The electric automobile has the defects that the driving distance cannot be too far after each charging, and the storage battery needs to be charged after no electricity. In the present technology, in order to guarantee that an electric automobile can be charged normally, related departments and charging pile operators can install automatic chargers (charging piles) in different areas such as roads, so that an owner can charge nearby when a storage battery of the automobile is close to no electricity, and normal running of the automobile is guaranteed.

In actual conditions, fill electric pile (after the person who charges sweeps a yard etc. through the cell-phone, fill the main control board output signal of electric pile body to the charging power strip, charging power strip output charging source to fill the supporting rifle that charges of electric pile, the person who charges just can charge for vehicle battery after inserting the rifle that charges of electric pile into the battery charging socket of car, take out the rifle that charges after filling the electricity, the main control board detects the back, control the power loss of charging power strip, third party application software charges to the person's that charges the volume of accomplishing whole charging processes) because there is the probability that takes place the electric leakage for various reasons, there is the risk of electrocution when the person who charges contacts the shell that fills electric pile like this. In addition, the current charging pile cannot get a fault at the first time due to the fact that relevant managers cannot timely and effectively prompt after electric leakage, and therefore the potential hazard of electric shock of subsequent charging people is caused. In summary, it is very necessary to provide a charging pile that can prompt a charger to pay attention to safety in time when electricity leaks and prompt a relevant manager at the first time.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects that the charging personnel cannot be reminded of safety when the current leakage occurs due to the structural limitation of the existing electric vehicle charging pile and the related personnel cannot be reminded of maintenance in the first time, the utility model provides an application, under the combined action of the related mechanisms, the main input power supply of the charging pile body can be automatically disconnected when the charging pile body leaks electricity, the LED display screen can visually display the leakage situation to attract the attention of a charger, can push a short message to prompt the mobile phone of a related manager to maintain as soon as possible during leakage, reduces the risk of electric shock of the charger, can prompt approaching vehicles when the mobile phone is used in a specific area and cannot provide a charging function, reduces the situations that the charging cannot be carried out and the road reaching the charging area is not smooth, an intelligent charging pile with an electric leakage protection device brings unnecessary trouble to a vehicle driver when a vehicle drives into a charging area.

The utility model provides a technical scheme that its technical problem adopted is:

an intelligent charging pile with an electric leakage protection device comprises a charging pile body, a stabilized voltage power supply and an LED display screen, and is characterized by also comprising an electric leakage detection switching circuit, a short message sending circuit, a wireless signal sending circuit and a wireless signal receiving circuit; the constant voltage power supply, the LED display screen, the electric leakage detection switching circuit, the short message sending circuit and the wireless signal sending circuit are arranged in the charging pile body, and the wireless signal receiving circuit is provided with a plurality of sets; the power supply output end of the stabilized voltage power supply is electrically connected with the power supply input ends of the leakage detection switching circuit and the short message sending circuit, and the total power supply input end in the charging pile body is electrically connected with the control power supply output end of the leakage detection switching circuit; the trigger signal input end of the electric leakage detection switching circuit is electrically connected with the metal shell of the charging pile body, and the trigger signal output end of the electric leakage detection switching circuit is electrically connected with the signal input end of the short message sending circuit and the power input end of the wireless signal sending circuit and the power input end of the LED display screen.

Furthermore, the stabilized voltage power supply is an alternating current to direct current switching power supply module, and a power output end of the stabilized voltage power supply is connected with a storage battery in parallel.

Further, the leakage detection switching circuit comprises a diode, a resistor, a thyristor and a relay, the diode, the resistor, the thyristor and the relay are electrically connected, the negative pole of the diode is connected with one end of the resistor, the other end of the resistor is connected with the control pole of the thyristor, the negative pole of the thyristor is connected with the positive pole power input end of the first relay, the normally open contact end of the first relay is connected with the positive pole power input end of the second relay, the negative pole power input ends of the two relays are connected, and the positive pole of the thyristor is connected with the control power input end of the first relay.

Further, the short message sending circuit comprises a short message module, a resistor and an NPN triode, the short message module, the resistor and the NPN triode are electrically connected, one end of the resistor is connected with a base electrode of the NPN triode, a collector electrode of the NPN triode is connected with a trigger signal input end of the short message module, and an emitter electrode of the NPN triode is connected with a negative power supply input end of the short message module.

Furthermore, the wireless signal transmitting circuit comprises a time control switch and a wireless transmitting circuit module, two power output ends of the time control switch are electrically connected with two power input ends of the wireless transmitting circuit module respectively, and two contacts of one transmitting button of the wireless transmitting circuit module are electrically connected together.

Further, the wireless signal receiving circuit comprises a wireless receiving circuit module, a resistor, an NPN triode, a buzzer and a storage battery, wherein the wireless receiving circuit module, the resistor, the NPN triode, the buzzer and the storage battery are arranged in the element box; the positive electrode of the storage battery is connected with the positive power input end of the wireless receiving circuit module and the positive power input end of the buzzer, the negative power input end of the wireless receiving circuit module is connected with the NPN triode emitter, one path of output end of the wireless receiving circuit module is connected with one end of the resistor, the other end of the resistor is connected with the base electrode of the NPN triode, and the collector electrode of the NPN triode is connected with the negative power input end of the buzzer.

The utility model has the advantages that: the utility model discloses fill electric pile body based on electric automobile, wireless signal receiving circuit has many sets, and the vehicle driver of fixed charging area (for example certain large-scale transportation unit, the corresponding regional self-contained electric pile that fills in the unit charges for this unit vehicle) respectively is equipped with one set. In this is novel, after filling the electric pile body and taking place the electric leakage, electric leakage detection switching circuit can be in time for a SMS of relevant managers' cell-phone propelling movement, suggestion it overhauls as early as possible through the SMS transmitting circuit automatically. In the utility model, the LED display screen can audio-visual word display during the electric leakage, the suggestion person of charging don't contact the shell of filling the electric pile body, the electric shock of worry, and wireless signal transmission circuit still can the interval send wireless signal in succession, wireless signal receiving circuit in the vehicle can receive after directly perceivedly through buzzer sound production suggestion driver, the vehicle driver of specific area just can be in advance being close to fill near 2000 meters left and right sides within range and obtain the suggestion, reduced can not charge and reach under the regional road of charging not unblocked the condition, the vehicle drives into the charging area and brings unnecessary trouble for vehicle driver. Based on the above, this is novel has good application prospect.

Drawings

Fig. 1 and 2 are schematic structural views of the present invention;

fig. 3 and 4 are circuit diagrams of the present invention.

Detailed Description

As shown in fig. 1 and 2, an intelligent charging pile with an electric leakage protection device includes a charging pile body 1, a voltage-stabilized power supply 2, an LED display screen 3, an electric leakage detection switching circuit 4, a short message sending circuit 5, a wireless signal sending circuit 6, and a wireless signal receiving circuit 7; constant voltage power supply 2, electric leakage detection switch circuit 4, short message sending circuit 5, wireless signal sending circuit 6 install on the circuit board in filling electric pile body 1 shell, and LED display screen 2 installs and fills the shell front end of electric pile body 1 and its screen is located the outer upper end middle part before the shell, and wireless signal receiving circuit 7 has many sets, and the vehicle driver in fixed charging area (for example certain large-scale transportation unit, the corresponding regional self-contained electric pile that fills in the unit charges for this unit vehicle) respectively is equipped with one set.

As shown in fig. 3 and 4, the regulated power supply U1 is a finished product of a 220V/12V ac-220V-to-dc 12V switching power supply module, and the power output end of the regulated power supply U1 is connected in parallel with a 12V/5Ah lithium storage battery G; the LED display screen is a finished product of a character LED display screen with the model p10 and the working voltage of direct current of 12V (the character display content is the electric leakage and the attention safety of the charging pile). The leakage detection switching circuit comprises a diode VD, a resistor R1, a silicon controlled rectifier VS, a relay K1, a relay K2, a diode, a resistor, a silicon controlled rectifier and a relay which are connected through circuit board wiring, the cathode of the diode VD is connected with one end of the resistor R1, the other end of the resistor R1 is connected with a control electrode of the silicon controlled rectifier VS, the cathode of the silicon controlled rectifier VS is connected with the anode power input end of a first relay K1, the normally open contact end of the first relay K1 is connected with the anode power input end of a second relay K2, the cathode power input ends of the two relays K1 and K2 are connected, and the anode of the silicon controlled rectifier VS is connected with the control power input end of the first relay K1. The short message sending circuit comprises a short message module U3, a resistor R2 and an NPN triode Q1, the short message module, the resistor and the NPN triode are connected through circuit board wiring, one end of the resistor R2 is connected with the base electrode of the NPN triode Q1, the collector electrode of the NPN triode Q1 is connected with a pin 3 of the triggering signal input end of the short message module U3, and the emitter electrode of the NPN triode Q1 is connected with a pin 2 of the negative power supply input end of the short message module U3; the short message module U3 is a finished product of a short message alarm module of a GSM 800 model, the finished product U3 of the short message alarm module has two

power input ends

1 and 2 pins and signal input ends 3-8 pins, after each signal input end inputs a low level signal, the finished product of the short message alarm module can send a corresponding short message through a wireless mobile network, 6 short messages can be stored in the short message alarm module (in the embodiment, a manager edits a short message in advance through the self function of the finished product of the short message alarm module, and the content is 'charging pile leakage'), and after the low level signal is input into the pin 3 of the signal input end of the short message alarm module, the short message alarm module can send a corresponding short message. The wireless signal transmitting circuit comprises a time control switch U5 and a wireless transmitting circuit module finished product U6 with the model SF2000, two

power output ends

3 and 4 pins of the time control switch U5 are respectively connected with two ends of a power input of the wireless transmitting circuit module U6 through leads, the wireless transmitting circuit module U6 is provided with four wireless signal transmitting keys, when the wireless transmitting circuit module U6 can transmit four paths of different wireless control signals when the wireless transmitting circuit module U6 is pressed down respectively, and two contacts of a first transmitting key S1 of the wireless transmitting circuit module U6 are connected together through leads; the time control switch U5 is a microcomputer time control switch finished product with model KG136, the upper end of the front side of the casing of the microcomputer time control switch is provided with a liquid crystal display, the front lower end of the casing is provided with seven keys of cancel/recovery, time correction, week correction, automatic/manual, timing and clock, the microcomputer time control switch is also provided with two

power input ends

1, 2 pins and two power output ends 3 and 4 pins, before application, a user respectively presses and operates the seven keys to set the interval time of the output power of the two power output ends and the time of the output power, and after one-time setting, as long as resetting is not carried out, the set power output time can not be changed after power failure.

As shown in fig. 1, 2, 3 and 4, the wireless signal receiving circuit includes a wireless receiving circuit module U7 of model SF2000, a resistor R3, an NPN triode Q2 and a buzzer B, a power switch SK (an operating handle is located outside an opening at the front end of the component box), a lithium battery G1 of model 12V/2Ah, and a charging socket CZ (a charging socket is located outside an opening at the front end of the component box), the wireless receiving circuit module, the resistor, the NPN triode and the buzzer, the power switch, the lithium battery, the charging socket are mounted on a circuit board in the component box 9 and connected through circuit board wiring, and the component box 9 is placed in a cab of the vehicle; two poles of a storage battery G1 and two terminals of a charging socket CZ are respectively connected (when the storage battery G is out of power, an external 12V power supply charger plug can be inserted into the charging socket CZ to charge the storage battery G), the positive pole of the storage battery G is connected with one end of a power switch SK, the other end of the power switch SK is connected with the 1 pin of the positive power input end of a wireless receiving circuit module U7 and the positive power input end of a buzzer B, the 3 pin of the negative power input end of the wireless receiving circuit module U7 is connected with an emitting electrode of an NPN triode Q2 and the negative electrode of the storage battery G, one 4 pins (the

rest

2, 5, 6 and 7 pins are suspended) of one output end of the wireless receiving circuit module U7 are connected with one end of a resistor R3, the other end of the resistor R3 is connected with a base electrode of the NPN triode Q2, and a collector electrode of the NPN triode Q2 is connected with the negative power input end of the buzzer B. The power input ends 1 and 2 of the regulated power supply U1, the two control power input ends of the relay K2 of the leakage detection switching circuit and the input 220V alternating current power line of the charging pile body are connected through leads;

pins

3 and 4 of a power output end of the regulated power supply U1 and

pins

1 and 2 of a power input two-end relay K1 control a power input end and a negative power input end of the leakage detection switching circuit and a power input end short message module U3 of the short message sending circuit are respectively connected through leads; a main power supply input end ST in the charging pile body and two normally closed contact ends of a control power supply output end relay K2 of the leakage detection switching circuit are respectively connected through a lead; the anode of a diode VD at the trigger signal input end of the leakage detection switching circuit is connected with the metal shell JK of the charging pile body through a wire; a normally open contact end of a trigger signal output end relay K1 of the leakage detection switching circuit is connected with the other end of a signal input end resistor R2 of the short message sending circuit and a pin 1 of a time control switch U5 of a positive power input end of the wireless signal sending circuit, and the positive power input end of the LED display screen is connected through a lead; the time control switch U5 negative power input end of the wireless signal sending circuit, the negative power input end of the LED display screen and the 4 feet of the negative power output end of the regulated power supply U1 are connected through leads.

As shown in fig. 1, 2, 3 and 4, after the 220V ac power supply enters

pins

1 and 2 of regulated power supply U1, regulated power supply U1 outputs stable dc12V power supply under the action of its internal circuit, and the power supply enters the power input end of the leakage detection switching circuit and the short message sending circuit, so that the circuits are in an electrified working state (meanwhile, the 12V power supply enters the storage battery G to float and charge the storage battery G, which ensures that each circuit can work normally after the charging pile body has a power failure). In the electric leakage detection switching circuit, fill electric pile body 1 when not having the electric leakage under the normal condition, the person who charges sweeps back such as sign indicating number through the cell-phone, the 220V power is through two control power supply input ends of relay K2, two normally closed contact ends get into and fill electric pile this internal total power supply input ST, fill this internal main control board output signal of electric pile to the charging power supply board, charging power supply is exported to filling the supporting rifle that charges of electric pile to the charging power supply board, the person who charges will fill the electric pile just can charge for vehicle battery after inserting the rifle CT that charges in the battery charging socket of car, take out charging rifle CT after filling the electricity, fill the main control board of electric pile body and detect the back, control charging power supply board loses the electricity, third party's application software charges to the volume of charging of person and accomplishes whole charging processes. Under the actual conditions, when the electric leakage happens in the charging pile body, the leakage current can be rectified through a diode VD half-wave (mainly aiming at an alternating current leakage signal, the effect of playing aiming at the direct current leakage signal is the effect of reducing the voltage), a resistor R1 reduces the voltage and limits the current to enter a control electrode of a silicon controlled rectifier VS, the silicon controlled rectifier VS is triggered and conducted, a relay K1 is electrified to attract the input end of a control power supply and a normally open contact end of the relay K1 to be closed, and then a relay K2 is electrified to attract the input ends of two control power supplies and two normally closed contact ends of the relay K2 to be respectively opened. Because, two normally closed contact ends of relay K2 with fill this internal total power input ST of electric pile and connect through the wire respectively, so when filling the electric pile body and taking place the electric leakage in 1, fill this internal total power input ST of electric pile and can cut off the power supply, prevented that the person that charges from contacting and lead to electrocuteeing through metal casing. Because the other end of the resistor R2 of the short message module U3 is connected with the normally open contact end of the relay K1, when electric leakage occurs in the charging pile body, the positive electrode of a 12V power supply can be subjected to voltage reduction and current limitation through the resistor R2 and enter the base electrode of the NPN triode Q1, the NPN triode Q1 is conducted with the collecting electrode to output low level to trigger the 3 rd pin of the short message module U2, so that the short message module U3 can send out a pre-stored short message of charging pile electric leakage, and a related manager connected with the short message module U3 can know that the electric leakage occurs in the charging pile body in the first time after receiving the short message through a mobile phone, so that the charging pile body can be maintained in the first time, and the probability of electric shock of personnel is reduced.

As shown in figures 1, 2, 3 and 4, the anode power input end of the LED display screen and the wireless signal sending circuit is connected with the normally open contact end of the relay K1, when the charging pile body leaks electricity, the LED display screen and the wireless signal sending circuit can be powered on simultaneously to work. The LED display screen can directly perceivedly give out light and show the characters "fill electric pile electric leakage and pay attention to safety" after getting electric, follow-up person that charges who is close to the electric pile body just can directly perceivedly know to fill electric pile body electric leakage like this, no longer charges or contact the shell, has prevented the emergence of electric shock accident. After the wireless signal sending circuit works by electrifying, the time control switch U5 outputs a power supply to the

pins

1 and 2 of the wireless transmitting circuit module U6 every 3 seconds, so the wireless transmitting circuit module U6 works by electrifying every 3 seconds, and as the two contacts of the first wireless signal transmitting key S1 of the wireless transmitting circuit module U6 are connected together by a lead in advance, the wireless transmitting circuit module U6 sends a first wireless closing signal of 2 seconds every 3 seconds after the electric leakage of the charging pile body occurs. In the wireless signal receiving circuit, before use, a driver turns on the power switch SK, so that the wireless receiving circuit module U7 is in a power-on working state, a vehicle drives into the charging pile body within 2000 m, when the field charging pile leaks electricity and the wireless transmitting circuit module transmits a first wireless closing signal, the wireless receiving circuit module U7 receives the first wireless closing signal, 4 feet of the wireless receiving circuit module U7 outputs high level, the high level is subjected to voltage reduction and current limitation through the resistor R3 and enters the base electrode of the NPN triode Q2, the NPN triode Q2 is conducted with the collector and outputs low level to enter the negative power input end of the buzzer B, and the buzzer B is powered to send out loud prompting sounds (sounds for 2 s every 3 s), so that the vehicle driver in a specific area can be prompted within about 2000 m close to the charging pile body in advance and does not drive the vehicle into the vicinity of the charging pile body any more, the situation that charging is not available and the road reaching the charging area is not smooth is reduced, and unnecessary trouble is brought to a vehicle driver when the vehicle enters the charging area. In the circuit, the model of a diode VD is 1N 4007; the resistances of the resistors R1, R2 and R3 are 1M, 4.7K and 1K respectively; relays K1, K2 are DC12V relays; the models of NPN triodes Q1 and Q2 are 9013; the silicon controlled rectifier VS is a plastic-sealed unidirectional silicon controlled rectifier of the model MCR 100-1; the buzzer B is an active continuous sound buzzer alarm finished product with the model SF 12V.

The basic principles and essential features of the invention and the advantages of the invention have been shown and described above, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but rather can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, the embodiments do not include only one independent technical solution, and such description is only for clarity, and those skilled in the art should take the description as a whole, and the technical solutions in the embodiments may be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An intelligent charging pile with an electric leakage protection device comprises a charging pile body, a stabilized voltage power supply and an LED display screen, and is characterized by also comprising an electric leakage detection switching circuit, a short message sending circuit, a wireless signal sending circuit and a wireless signal receiving circuit; the constant voltage power supply, the LED display screen, the electric leakage detection switching circuit, the short message sending circuit and the wireless signal sending circuit are arranged in the charging pile body, and the wireless signal receiving circuit is provided with a plurality of sets; the power supply output end of the stabilized voltage power supply is electrically connected with the power supply input ends of the leakage detection switching circuit and the short message sending circuit, and the total power supply input end in the charging pile body is electrically connected with the control power supply output end of the leakage detection switching circuit; the trigger signal input end of the electric leakage detection switching circuit is electrically connected with the metal shell of the charging pile body, and the trigger signal output end of the electric leakage detection switching circuit is electrically connected with the signal input end of the short message sending circuit and the power input end of the wireless signal sending circuit and the power input end of the LED display screen.

2. The intelligent charging pile with the earth leakage protection device as claimed in claim 1, wherein the regulated power supply is an ac-dc switching power supply module, and the power output terminal of the regulated power supply is connected in parallel with the storage battery.

3. The intelligent charging pile with the earth leakage protection device as claimed in claim 1, wherein the earth leakage detection switching circuit comprises a diode, a resistor, a thyristor and a relay, the diode, the resistor, the thyristor and the relay are electrically connected, the cathode of the diode is connected with one end of the resistor, the other end of the resistor is connected with a control electrode of the thyristor, the cathode of the thyristor is connected with the positive power input end of the first relay, the normally open contact end of the first relay is connected with the positive power input end of the second relay, the cathode power input ends of the two relays are connected, and the anode of the thyristor is connected with the control power input end of the first relay.

4. The intelligent charging pile with the earth leakage protection device as claimed in claim 1, wherein the short message sending circuit comprises a short message module, a resistor and an NPN triode, the short message module, the resistor and the NPN triode are electrically connected, one end of the resistor is connected with a base of the NPN triode, a collector of the NPN triode is connected with a trigger signal input end of the short message module, and an emitter of the NPN triode is connected with a negative power supply input end of the short message module.

5. The intelligent charging pile with the earth leakage protection device as claimed in claim 1, wherein the wireless signal transmission circuit comprises a time switch and a wireless transmission circuit module, two power output ends of the time switch are electrically connected with two power input ends of the wireless transmission circuit module respectively, and two contacts under one of the transmission buttons of the wireless transmission circuit module are electrically connected together.

6. The intelligent charging pile with the leakage protection device as claimed in claim 1, wherein the wireless signal receiving circuit comprises a wireless receiving circuit module, a resistor, an NPN triode and buzzer, and a storage battery, and the wireless receiving circuit module, the resistor, the NPN triode and buzzer, and the storage battery are mounted in the component box; the positive electrode of the storage battery is connected with the positive power input end of the wireless receiving circuit module and the positive power input end of the buzzer, the negative power input end of the wireless receiving circuit module is connected with the NPN triode emitter, one path of output end of the wireless receiving circuit module is connected with one end of the resistor, the other end of the resistor is connected with the base electrode of the NPN triode, and the collector electrode of the NPN triode is connected with the negative power input end of the buzzer.