CN210258089U

CN210258089U - Multi-path alternating-current charging pile

Info

Publication number: CN210258089U
Application number: CN201921314725.2U
Authority: CN
Inventors: 肖磊
Original assignee: Urumqi Lvtaomei Electronic Technology Co Ltd
Current assignee: Urumqi Lvtaomei Electronic Technology Co Ltd
Priority date: 2019-08-10
Filing date: 2019-08-10
Publication date: 2020-04-07
Anticipated expiration: 2029-08-10

Abstract

The utility model provides a multichannel alternating-current charging stake, includes a plurality of interfaces that charge that set up on filling electric pile, still includes: the system comprises a connection state detection module, a two-dimensional code display module and a master control CPU, wherein the master control CPU is in network connection with a remote master station platform corresponding to the two-dimensional code and is used for receiving a control signal of the remote master station platform and controlling the charging interface to be electrified according to the control signal. The utility model discloses a multichannel fills electric pile's network and pays for fill electric pile more intelligent that charges.

Description

Multi-path alternating-current charging pile

Technical Field

The invention relates to the technical field of charging piles, in particular to a multi-path alternating current charging pile.

Background

Because the electric vehicle has the characteristics of low pollutant emission, high energy utilization rate, sustainable development, convenient maintenance and the like, the large-scale popularization of the electric vehicle is one of the most effective modes for relieving atmospheric pollution and energy shortage. Along with a large amount of popularizations of electric motor car, also change for the electric pile structure that fills that the electric motor car charges thereupon, one of its main change is exactly the design that the electric pile was filled to the multichannel, and it realizes the charging to a plurality of electric motor cars through a stake of filling.

However, the alternating current charging pile mostly adopts the coin-feed mode during the expense settlement, and the user can charge the electric vehicle by charging the electric pile by putting coins into the electric pile before charging, but in the using process, the manager is required to take out the coins from the charging pile regularly for settlement, the process of collecting the coins and settling the account is very complicated, and a great deal of inconvenience is brought to the manager. In addition, the coins stored in the charging piles usually lack supervision, and the coins are easy to steal if not collected timely, so that loss is caused. The price of charging pile is fixed setting, can't change, leads to the mode that can not take the price of using time of day electricity to charge, causes to charge the electric pile charge inaccurate.

Disclosure of Invention

The invention aims to provide a multi-path alternating-current charging pile which can realize network payment.

The above object of the present invention is achieved by the following technical solutions:

the utility model provides a multichannel alternating-current charging stake, includes a plurality of interfaces that charge that set up on filling electric pile, still includes:

the connection state detection modules correspond to the charging interfaces one by one and are used for detecting the connection states of the charging interfaces and the electric vehicle and outputting state detection signals when the charging interfaces are communicated with the electric vehicle;

the two-dimensional code display module is connected with the connection state detection module and used for receiving the state detection signal and displaying the two-dimensional code within preset time after receiving the state detection signal;

and the master control CPU is in network connection with the remote master station platform corresponding to the two-dimensional code and is used for receiving a control signal of the remote master station platform and controlling the charging interface to be electrified according to the control signal.

By adopting the technical scheme, when the charging pile needs to be used, the corresponding charging interface is connected with the electric vehicle at first, the connection state of the charging interface and the electric vehicle is detected through the connection state detection module, after the connection state detection module outputs a state detection signal, the charging interface is stably connected with the electric vehicle, at the moment, the two-dimensional code is displayed through the two-dimensional code display module, a user pays by scanning the two-dimensional code, the remote master station platform outputs a control signal after acquiring payment information, and the master control CPU controls the charging interface to be electrified according to the control signal. The process of inserting coins of entity has been saved among the whole process, has realized the network payment, and the charging function of electric pile is filled in the long-range main website platform of staff's accessible regulation for it is more intelligent to fill electric pile to charge. Meanwhile, due to the arrangement of the connection state detection module, the detection of the connection state of the charging interface is realized, the charging effectiveness is guaranteed to a certain extent, the two-dimensional code display module can display the two-dimensional code only after receiving the state detection signal, and the conflict between the payment time and the charging time is avoided.

As the utility model discloses an improvement, still including the charging amount monitoring module, the interface that charges is connected to the charging amount monitoring module for real-time supervision charges the power output of interface and output electric quantity monitoring signal to master control CPU.

Through adopting above-mentioned technical scheme, the detection to the charge volume has been realized to the setting of charge volume monitoring module, compares in calculating charge time, has optimized the measurement to filling electric pile and charging.

As the utility model discloses an improvement, charge amount monitoring module include with the mutual-inductor that interface charging circuit is coupled charges and the voltage follower who is connected with the mutual-inductor charge, the output of voltage follower passes through AD conversion module and connects master control CPU.

Through adopting above-mentioned technical scheme, the mutual-inductor can realize the detection to electric current in the charging line to realize the monitoring of charging amount according to the current change. Meanwhile, the voltage follower has the characteristics of high input resistance and low output resistance, and the accuracy of electric quantity monitoring data is effectively guaranteed.

As the utility model discloses an improvement, master control CPU is through an interface circuit control the interface circular telegram that charges, interface circuit includes NPN type's triode and interface relay, the basic level of triode is coupled master control CPU, the transmitter ground connection of triode, the collecting electrode of triode is through a current-limiting resistor connection power positive, and the collecting electrode of triode is connected through a fixed resistance with the node that current-limiting resistor is coupled interface relay's coil, the other end connection power positive of coil, interface relay's normally open contact concatenates in the power supply loop of the interface that charges.

As an improvement of the utility model, connection state detection module includes:

a trigger circuit for outputting a trigger pulse;

and the detection circuit is coupled with the charging loop of the charging interface and used for detecting the trigger pulse in the charging loop and outputting the state detection signal after detecting the trigger pulse.

As the utility model discloses an improvement, trigger circuit is including setting up fill trigger switch on the electric pile and with the schmitt trigger of trigger switch linkage, interface relay's normally open contact is connected with the nodal connection that the electrical connection terminal of the interface that charges is coupled schmitt trigger's output.

By adopting the technical scheme, the Schmitt trigger is triggered by the trigger switch, stable voltage can be output by the Schmitt trigger, if the charging interface is stably connected with the electric vehicle, the detection circuit can detect weak current, otherwise, the weak current cannot be detected.

As the utility model discloses an improvement, two-dimensional code display module is including setting up sweeping the code groove and being located the printing opacity piece of sweeping the code groove on filling electric pile, the printing opacity piece orientation is swept the side of code groove inside and is provided with the two-dimensional code of constituteing by the laser hole, the printing opacity piece is provided with the light of shining towards the printing opacity piece with the tip of sweeping code inslot wall connection, detection circuitry is connected to light one end, other end ground connection.

Through adopting above-mentioned technical scheme, when the light is luminous, the laser hole on the light-transmitting piece is illuminated to accessible light-transmitting piece tip to constitute the two-dimensional code through luminous laser hole, and under the normality, the laser hole is not illuminated, and the user of service can not scan the two-dimensional code, thereby prevents to scan the two-dimensional code and pay the back, and the electric motor car has not begun the condition emergence that charges.

As an improvement of the utility model, the light-transmitting piece faces to the surface of the code scanning groove is attached with a backlight piece.

Through adopting above-mentioned technical scheme, the setting of backlight can make the two-dimensional code that is constituteed by the laser hole that is illuminated clearer, the scanning of being convenient for.

In conclusion, the beneficial technical effects of the invention are as follows:

1. through the arrangement of the two-dimension code and the remote master station platform, network payment is realized, so that the use of the charging pile is more intelligent;

2. the connection state detection module and the two-dimensional code display module are arranged to prevent conflict between code scanning payment and electric vehicle charging, and charging effectiveness is guaranteed.

Drawings

Fig. 1 is a system diagram of an ac charging post;

FIG. 2 is a circuit diagram of an interface circuit;

FIG. 3 is a circuit diagram of a connection status detection module;

FIG. 4 is a schematic view of a code scanning slot structure.

In the figure, 1, an interface circuit; 2. a connection state detection module; 21. a trigger circuit; 22. a detection circuit; 221. an illuminating lamp; 3. a charge amount monitoring module; 4. scanning a code slot; 41. a side frame; 42. a base plate; 43. a light transmitting sheet; 44. a backlight sheet.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the multi-path alternating-current charging pile disclosed by the invention comprises a plurality of charging interfaces arranged on the charging pile, connection state detection modules 2 corresponding to the charging interfaces one by one, a two-dimensional code display module connected with the connection state detection modules 2, a remote master station platform corresponding to a two-dimensional code displayed by the two-dimensional code display module, and a master control CPU (central processing unit) positioned in the charging pile. The connection state detection module 2 is used for detecting the connection state of the charging interface and the electric vehicle, and outputting a state detection signal when the charging interface is communicated with the electric vehicle; after receiving the state detection signal, the two-dimensional code display module displays the two-dimensional code of preset time, and the master control CPU controls the corresponding charging interface to be electrified through the interface circuit 1.

As shown in fig. 2, the multi-path charging interfaces are respectively connected to a latch through corresponding interface circuits 1, and the main control CPU controls the interface circuits 1 through the latches. The type of the latch is preferably M74HC573MIR, the number of the latches depends on the number of charging interfaces, here, the number of charging interfaces is preferably 10, and the master CPU is connected through two latches.

The interface circuit 1 comprises an NPN type triode Q1 and an interface relay, a base stage of the triode Q1 is coupled with a latch, a transmitter of the triode Q1 is grounded, a collector of the triode Q1 is connected with the positive electrode of a power supply through a current-limiting resistor R14, a node where the collector of the triode Q1 is coupled with a current-limiting resistor R14 is connected with a coil KM1 of the interface relay through a fixed resistor R15, the other end of the coil KM1 is connected with the positive electrode of the power supply, and a normally-open contact KM1-1 of the interface relay is connected in series in a power supply loop of a charging. When the master control CPU is conducted through the latch trigger triode Q1, the coil KM1 is electrified, and the normally open contact KM1-1 is closed, so that a power connection terminal and a power supply of a charging interface are communicated, and the charging interface can charge the electric vehicle.

Referring to fig. 3, the connection state detection module 2 includes a trigger circuit 21 and a detection circuit 22.

The trigger circuit 21 includes a trigger switch K, a schmitt trigger, and an amplifying circuit, which are provided on the charging pile. One end of the trigger switch K is connected with the positive electrode of the power supply, the other end of the trigger switch K is connected with the input end of the Schmitt trigger through the inverter F1, and a user can trigger the Schmitt trigger through the trigger switch K. The amplifying circuit is realized based on an LMC6482 type amplifier DP, a non-inverting input end of the amplifier DP is connected with an output end of the Schmitt trigger through a fixed resistor R3, a node of the amplifier DP coupled with a fixed resistor R3 is connected with the output end of the amplifier DP through a fixed resistor R4, an inverting input end of the amplifier DP is grounded, and a node of the normally-open contact KM1-1 coupled with a connecting terminal of a charging interface is connected with the output end of the amplifier DP. When the Schmitt trigger is triggered, the Schmitt trigger outputs a trigger pulse through the amplifying circuit. The schmitt trigger is preferably a 555 timer based trigger.

The detection circuit 22 includes a hall current sensor, a comparator D1, and a drive circuit, which are connected in this order.

The Hall current sensor is a direct current Hall sensor, is sleeved on a connecting wire between the output end of the amplifier and the charging interface power connection terminal, and is used for detecting the current on the power connection wire and outputting a current detection signal. One output end of the Hall current sensor is grounded, the other output end of the Hall current sensor is connected with a non-inverting input end of a comparator D1, an inverting input end of a comparator D1 is connected with a reference circuit, the reference circuit comprises a fixed resistor R6 and a fixed resistor R7 which are connected in series with a power supply, a node where the fixed resistor R6 and the fixed resistor R7 are coupled is connected with an inverting input end of a comparator D1, and an output end of the comparator D1 is connected with a driving circuit.

The driving circuit comprises an NPN type triode Q2, the base stage of the triode Q2 is connected with the output end of the comparator D1, the emitting stage of the triode Q2 is grounded, and the collector electrode of the triode Q2 is connected with the positive electrode of the power supply through a fixed resistor R10 and a current-limiting resistor R11 which are connected in parallel.

Referring to fig. 4 again, the two-dimensional code display module includes a code scanning groove 4 disposed on the charging pile and a light-transmitting sheet 43 disposed in the code scanning groove 4. Sweep the ink recorder groove 4 and enclose by four side frames 41 and a bottom plate 42 and form, through self-tapping screw fixed connection between four side frames 41 and the bottom plate 42, the side frame 41 is swept the ink recorder groove 4 inside towards the side and is sunken formation exposure groove and support groove from top to bottom in proper order, printing opacity piece 43 passes through the exposure groove to be fixed in sweeping the ink recorder groove 4, and the exposure inslot wall is fixed with the light 221 who shines towards printing opacity piece 43, it is provided with the backlight 44 of two sides laminating respectively and sweeping the ink recorder groove 4 bottom and printing opacity piece 43 in the support groove, the selection of backlight is with lighttight blue ya keli board. The side of the light-transmitting sheet 43 facing the backlight sheet is provided with the two-dimensional code consisting of laser holes, and when the illuminating lamp 221 emits light, the laser holes can be illuminated by the end of the light-transmitting sheet 43, so that the light-emitting two-dimensional code is formed by the laser holes.

Referring again to fig. 3, the illumination lamp 221 is preferably an LED lamp strip, and the illumination lamp 221 is connected in series between the fixed resistor R10 and the positive power supply.

When the current detection signal output by the hall current sensor is greater than the node voltage output by the reference circuit, the comparator D1 triggers the triode Q2 to be conducted, the illuminating lamp 221 is electrified and emits light, and thus the state detection signal is output.

Further, a charging amount monitoring module 3 is further arranged in a charging loop of the charging interface.

The charging amount monitoring module 3 comprises a mutual inductor coupled with a charging interface charging loop and a voltage follower connected with the mutual inductor, and the output end of the voltage follower is connected with a main control CPU through an AD conversion module. The current in the charging loop of the charging interface is monitored in real time by the alternating current transformer, and is input to the main control CPU through the AD conversion module. And the main control CPU measures the charging amount of the charging interface according to the current data monitored by the alternating current transformer. The AD conversion module is preferably an AD conversion circuit based on an AD chip of ADS7819U model, and the transformer is a ZTA503C model transformer.

As can be seen from the above, referring to fig. 1, when a user wants to charge an electric vehicle, the user first connects the charging interface and the electric vehicle, presses the trigger switch K, and detects the stability of the connection between the charging interface and the electric vehicle through the connection state monitoring module. When the charging interface is stably connected with the electric vehicle, the illuminating lamp 221 continuously emits light to illuminate the two-dimensional code on the light-transmitting sheet 43, and a user scans the two-dimensional code through a mobile phone to log in a remote master station platform, so that setting of relevant information such as charging time, charging cost, voltage level and the like is achieved. The remote master station platform outputs a control signal to the master control CPU according to the related information set by the user, and the master control CPU controls the electric connection terminal of the charging interface to be connected with the power supply through the interface circuit 1 after receiving the control signal, so that the electric vehicle is charged. The charging amount monitoring module 3 can monitor the charging amount in real time in the charging process, so that the data acquisition of the charging amount is realized.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides a multichannel alternating-current charging stake, its characterized in that still includes including setting up a plurality of interfaces that charge on filling electric pile:

the connection state detection modules (2) correspond to the charging interfaces one by one and are used for detecting the connection states of the charging interfaces and the electric vehicle and outputting state detection signals when the charging interfaces are communicated with the electric vehicle;

the two-dimensional code display module is connected with the connection state detection module (2) and used for receiving the state detection signal and displaying the two-dimensional code within preset time after receiving the state detection signal;

2. The multi-path alternating-current charging pile according to claim 1, characterized in that: the intelligent charging system is characterized by further comprising a charging amount monitoring module (3), wherein the charging amount monitoring module (3) is connected with the charging interface and used for monitoring the power output of the charging interface in real time and outputting an electric quantity monitoring signal to the main control CPU.

3. The multi-path alternating-current charging pile according to claim 2, characterized in that: the charging amount monitoring module (3) comprises a mutual inductor coupled with the charging interface charging loop and a voltage follower connected with the mutual inductor, and the output end of the voltage follower is connected with the main control CPU through an AD conversion module.

4. The multi-path alternating-current charging pile according to claim 1, characterized in that: the main control CPU controls the charging interface to be electrified through an interface circuit (1), the interface circuit (1) comprises an NPN type triode and an interface relay, the base level of the triode is coupled with the main control CPU, the transmitter of the triode is grounded, the collector electrode of the triode is connected with the positive electrode of a power supply through a current-limiting resistor, the node where the collector electrode of the triode is coupled with the current-limiting resistor is connected with the coil of the interface relay through a fixed resistor, the other end of the coil is connected with the positive electrode of the power supply, and the normally open contact of the interface relay is connected in series with the power supply loop of the charging interface.

5. The multi-path alternating-current charging pile according to claim 4, characterized in that: the connection state detection module (2) includes:

a trigger circuit (21) for outputting a trigger pulse;

and the detection circuit (22) is coupled with the charging loop of the charging interface and used for detecting the trigger pulse in the charging loop and outputting the state detection signal after detecting the trigger pulse.

6. The multi-path alternating-current charging pile according to claim 5, characterized in that: the trigger circuit (21) comprises a trigger switch arranged on the charging pile and a Schmidt trigger linked with the trigger switch, and a node of a normally open contact of the interface relay and an electric terminal of a charging interface are coupled and connected with an output end of the Schmidt trigger.

7. The multi-path alternating-current charging pile according to claim 1, characterized in that: two-dimensional code display module is including setting up scanning code slot (4) on filling electric pile and being located light-transmitting sheet (43) of scanning code slot (4), the inside side of code slot (4) is swept to light-transmitting sheet (43) orientation is provided with the two-dimensional code of constituteing by the laser hole, light-transmitting sheet (43) and the tip of sweeping code slot (4) inner wall connection are provided with towards light-transmitting sheet (43) illuminating lamp (221), detection circuitry (22) are connected to lamp (221) one end, other end ground connection.

8. The multi-path alternating-current charging pile according to claim 7, characterized in that: the surface of the light-transmitting sheet (43) facing the code scanning groove (4) is attached with a backlight sheet (44).