Charging control circuit of alternating current charging pile

Abstract

The utility model relates to the technical field of alternating-current charging piles, solves the technical problem that intelligent analysis on the problems of the alternating-current charging piles is lacked in the prior art, and particularly relates to a charging control circuit of an alternating-current charging pile, which comprises a power supply module, a display module and an intelligent module, the intelligent module is composed of a protection module, a communication module, a control module and a man-machine interaction module, the protection module is composed of a power supply voltage, current-limiting resistors R2, R3, R4 and R5, a triode Q1, a Pmos tube Q2, a voltage-regulator tube D1 and a protection voltage, through the action of the intelligent module, the circuit can be effectively protected, abnormal voltage can be analyzed, and the man-machine interaction function is achieved. The system determines the specific position of the abnormal voltage and possible problems, sends the abnormal information to the control center, communicates with the user through the man-machine interaction module and the display module, pacifies the customer, explains the reason, and improves the use experience of the customer.

Description

TECHNICAL FIELD

[0001] The utility model relates to alternating current charging pile technical field especially relates to a kind of alternating current charging pile charging control circuit. BACKGROUND

[0002] Alternating current charging pile is transported to electric vehicle by power supply line with alternating current, and is connected with electric vehicle charging port by charging connector, in the charging process, alternating current charging pile converts 220V or 380V alternating current into the voltage grade suitable for electric vehicle battery system required, but does not directly convert into direct current, this conversion process is completed by the on-board charger of electric vehicle, the on-board charger converts alternating current into direct current, and then charges battery, the existing alternating current charging pile can only overvoltage protection to unstable alternating current in alternating current charging process, but in the protection process, lack and automobile or charging pile control system effectively information transmission, when detecting alternating current charging problem is not intelligent enough, cannot more efficient and fast analysis problem, can only rely on staff to arrive on site to analyze problem, efficiency is very low. SUMMARY

[0003] In view of the defects of the prior art, the utility model provides an alternating current charging pile charging control circuit, solves the technical problem that the prior art lacks intelligent analysis on the problem of alternating current charging pile, and achieves the purpose of quickly detecting and analyzing problems and effectively transmitting information.

[0004] To solve the above technical problems, the utility model provides the following technical scheme: an alternating current charging pile charging control circuit, including power supply module and display module, the control circuit further includes intelligent module.

[0005] Preferably, the intelligent module is composed of protection module, communication module, control module and man-machine interaction module, the protection module is composed of power supply voltage, current limiting resistor R2, R3, R4 and R5, triode Q1, Pmos tube Q2, voltage stabilizing tube D1 and protection voltage, power-on voltage is connected with the source electrode of Pmos tube Q2 through current limiting resistor R5, power supply voltage is grounded through current limiting resistor R2 and voltage stabilizing tube D1, current limiting resistor R3 is connected on the base of triode Q1 in parallel between current limiting resistor R2 and voltage stabilizing tube D1, the emitter of triode Q1 is connected between power supply voltage and current limiting resistor R5, the collector of triode Q1 is grounded through current limiting resistor R4, and the collector of triode Q1 is connected on the gate of Pmos tube Q2, and the drain of Pmos tube Q2 outputs protection voltage.

[0006] Preferably, the communication module is composed of a power supply voltage, a filtering capacitor C3, a communication conversion chip, a current limiting resistor R1, a CANH signal and a CANL signal, the power supply voltage is connected to the Vcc port of the communication conversion chip through the filtering capacitor C3, the CANH port of the communication conversion chip outputs the CANH signal, the CANL port of the communication conversion chip outputs the CANL signal, and the current limiting resistor R1 is connected between the CANH port and the CANL port.

[0007] Preferably, the human-computer interaction module is composed of a filtering capacitor C4, an interaction conversion chip, an external voltage and a COM common end, the filtering capacitor C4 is connected to the V- port of the interaction conversion chip, the VCC port of the interaction conversion chip is connected to the power supply voltage, the T_OUT port of the interaction conversion chip is connected to the 4th port of the COM common end, and the R_IN port of the interaction conversion chip is connected to the 6th port of the COM common end.

[0008] Preferably, the power supply module is composed of an external power supply, a rectifier circuit, a power supply chip, filtering capacitors C1 and C2 and a stabilized voltage, the external power supply is connected to the Vin port of the power supply chip through the rectifier circuit, the Vout port of the power supply chip outputs the stabilized voltage to the outside, and the Vin port and the Vout port of the power supply chip are respectively connected in parallel with the filtering capacitors C1 and C2.

[0009] Preferably, the display module is composed of a display screen, a first display voltage and a second display voltage, the VCC port of the display screen is connected to the first display voltage, and the BL+ port of the display screen is connected to the second display voltage.

[0010] Preferably, the model number of the power supply chip is 7805, the model number of the display screen is LCD1602, the model number of the communication conversion chip is TLE6250, and the model number of the interaction conversion chip is ADM101E.

[0011] By means of the above technical scheme, the utility model provides an alternating current charging pile charging control circuit, at least has the following beneficial effects:

[0012] 1、 the utility model discloses a intelligent module's effect can be protected to alternating current charging pile at any time, when the abnormality of alternating voltage not only can effectively protect the circuit, still can rely on communication module, control module and human-computer interaction module to abnormal voltage is analyzed, determines the specific position and possible problem of abnormal voltage, and sends abnormal information to control center, utilizes human-computer interaction module and display module and user communicate simultaneously, pacifies the customer and explains the reason, improves the use experience of customer.

[0013] 2, the utility model discloses a display module can provide quick and convenient operation interface for user and staff, can show the charging data in time in the display module, let user and staff have a specific understanding to each data in charging, improve the operation convenience of charging pile and the comprehensiveness of data display. BRIEF DESCRIPTION OF DRAWINGS

[0014] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the present application and serve to explain the present application, and do not limit the present application. In the drawings:

[0015] Figure 1 It is a structural block diagram of the utility model one kind AC charging pile charging control circuit;

[0016] Figure 2 It is the circuit diagram of the utility model power supply module;

[0017] Figure 3 It is the circuit diagram of the utility model communication module;

[0018] Figure 4 It is the circuit diagram of the utility model man-machine interaction module;

[0019] Figure 5 It is the circuit diagram protection module of the utility model;

[0020] Figure 6 It is the circuit diagram of the utility model display module.

[0021] In the drawing: 1, power supply module;2, display module;3, intelligent module;31, protection module;32, communication module;33, control module;34, man-machine interaction module. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the utility model will be further described in detail below with reference to the drawings and specific embodiments. By this, the realization process of how to apply technical means to solve technical problems and achieve technical effects of the present application can be fully understood and implemented.

[0023] The prior art lacks the technical problem of intelligent analysis of AC charging piles, please refer to Figure 1 Figure 6 ​The embodiment provides an alternating current charging pile charging control circuit which can quickly detect and analyze problems and effectively transmit information, the control circuit comprises a power supply module 1 and a display module 2, and the control circuit further comprises an intelligent module 3, the intelligent module 3 is composed of a protection module 31, a communication module 32, a control module 33 and a man-machine interaction module 34, the protection module 31 is composed of a power supply voltage, current limiting resistors R2, R3, R4 and R5, a triode Q1, a Pmos tube Q2, a voltage stabilizing tube D1 and a protection voltage, the power-on voltage is connected with the source electrode of the Pmos tube Q2 through the current limiting resistor R5, the power supply voltage is grounded through the current limiting resistor R2 and the voltage stabilizing tube D1, the current limiting resistor R3 is connected with the base electrode of the triode Q1 and is connected in parallel between the current limiting resistor R2 and the voltage stabilizing tube D1, the emitter electrode of the triode Q1 is connected between the power supply voltage and the current limiting resistor R5, the collector electrode of the triode Q1 is grounded through the current limiting resistor R4, the collector electrode of the triode Q1 is connected with the gate electrode of the Pmos tube Q2, the drain electrode of the Pmos tube Q2 outputs the protection voltage, the communication module 32 is composed of the power supply voltage, a filter capacitor C3, a communication conversion chip, a current limiting resistor R1, a CANH signal and a CANL signal, the power supply voltage is connected with the Vcc port of the communication conversion chip through the filter capacitor C3, the CANH port of the communication conversion chip outputs the CANH signal, the CANL port of the communication conversion chip outputs the CANL signal, the current limiting resistor R1 is connected between the CANH port and the CANL port, the man-machine interaction module 34 is composed of a filter capacitor C4, an interactive conversion chip, the power supply voltage and a COM common end, the filter capacitor C4 is connected with the V- port of the interactive conversion chip, the VCC port of the interactive conversion chip is connected with the power supply voltage, the T_OUT port of the interactive conversion chip is connected with the No.4 port of the COM common end, the R_IN port of the interactive conversion chip is connected with the No.6 port of the COM common end, the model of the power supply chip is 7805, the model of the display screen is LCD1602, the model of the communication conversion chip is TLE6250, and the model of the interactive conversion chip is ADM101E.

[0024] The utility model discloses a protection module 31 is protected to the charging voltage of alternating current charging stake in the use process, and its principle is the cooperation of Pmos pipe Q2 and triode Q1 realizes overvoltage protection, for example when the supply voltage is 5V, and D1 stabilivolt is 5.1V, because input voltage is less than 5.1V, at this time D1 has not entered the steady voltage state, at this time no conduction, triode does not conduct too, when input voltage is 5.4V, greater than 5.1V of D1, D1 conduction and steady voltage at 5.1V, at this time voltage difference of triode Q1 is -0.3V, and the conduction voltage requirement of Pmos pipe Q2 voltage difference reaches -0.6V, triode Q1 still does not conduct, and the gate of Pmos pipe Q2 is pulled to 0V by resistance R4, and the gate-source voltage of Pmos pipe Q2 is -5.4V, so Pmos pipe Q2 conducts, and the protection voltage is equal to 5.4V, and the normal power supply of back circuit, when the supply voltage is greater than 5.7V, at this time the gate-source voltage of Pmos pipe Q2 is 0, and Pmos pipe Q2 does not conduct, that is, the input voltage is too high now, and the protection voltage is turned off at this time, and the load circuit behind is protected, and if the protection circuit is changed to other voltage size, can directly replace the stabilivolt D1 of different steady voltage value.

[0025] When the protection voltage protects the circuit, it is indicated that the voltage of the supply voltage is too high, at this time voltage and current data in the circuit are acquired through the communication module 32, the control module 33 and the man-machine interaction module 34, and the problem in the internal circuit of the charging stake is analyzed through an artificial intelligence algorithm, such as a data detection and early warning model established through a decision tree model or a neural network model, and the specific position and countermeasures of the problem are given, the standby stable power supply in the charging stake is controlled to continue to work through the communication module 32 and the control module 33, and the relevant information of the problem is transmitted to the management center and the staff, and the man-machine interaction module 34 communicates with the user, pacifies the user and waits for a period of time, the staff can make full preparation according to the problem related information sent, and the problem of the charging stake is solved efficiently, wherein the communication module 32 can convert TTL signals into CAN signals, the man-machine interaction module 34 converts TTL signals into 232 signals, the CAN transceiver chip and the artificial intelligence processor are convenient for processing, through the action of the intelligent module, the alternating current charging stake can be protected at any time, when the alternating voltage is abnormal, not only the circuit can be effectively protected, but also the specific position and possible problems of the abnormal voltage can be determined by analyzing the abnormal voltage through the communication module, the control module and the man-machine interaction module, and the abnormal information is sent to the control center, and the man-machine interaction module and the display module are used to communicate with the user, pacify the customer and explain the reason, and the use experience of the customer is improved.

[0026] The power supply module 1 is composed of an external power supply, a rectifier circuit, a power supply chip, filter capacitors C1 and C2 and a stabilized current voltage, the external power supply is connected with the Vin port of the power supply chip through the rectifier circuit, the Vout port of the power supply chip outputs the stabilized current voltage outward, the Vin port and the Vout port of the power supply chip are respectively connected with the filter capacitors C1 and C2 in parallel, the display module 2 is composed of a display screen, a first display voltage and a second display voltage, the VCC port of the display screen is connected with the first display voltage, and the BL+ port of the display screen is connected with the second display voltage.

[0027] The utility model discloses a power supply module 1 is for the power supply of intelligent module 3, the power supply voltage, the first display voltage and the second display voltage in intelligent module 3 are all provided by power supply module 1, and display module 2 can provide the operation interface of intelligent convenience, and the user can also carry out man-machine interactive communication through display module 2, and the user and the staff can be provided with quick and convenient operation interface through display module, and each data in the charging can be displayed in time in display module, so that the user and the staff have a specific understanding to the data in the charging, and the operation convenience of charging pile and the comprehensiveness of data display are improved.

[0028] Each embodiment in the specification adopts progressive mode and describes that each embodiment focuses on the difference from other embodiments, and the same or similar parts of each embodiment can be referred to each other.For the above each embodiment, since it is basically similar with the method embodiment, so the description is relatively simple, and the related part can be referred to the part of the method embodiment.

[0029] The above embodiment is described in detail, and the principle and implementation mode of the utility model are described by applying specific examples in the paper, and the above embodiment is only used for helping to understand the method and core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the utility model, the specific implementation mode and application range will have the change, and the above is described, and the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A charging control circuit for an AC charging pile, comprising a power supply module (1) and a display module (2), characterized in that, The control circuit also includes an intelligent module (3); The intelligent module (3) consists of a protection module (31), a communication module (32), a control module (33), and a human-machine interaction module (34). The protection module (31) consists of a power supply voltage, current limiting resistors R2, R3, R4 and R5, transistor Q1, PMOS transistor Q2, Zener diode D1, and protection voltage. The power supply voltage is connected to the source of PMOS transistor Q2 through the current limiting resistor R5. The power supply voltage is grounded through the current limiting resistor R2 and Zener diode D1. The current limiting resistor R3 is connected in parallel between the current limiting resistor R2 and Zener diode D1 and is connected to the base of transistor Q1. The emitter of transistor Q1 is connected between the power supply voltage and the current limiting resistor R5. The collector of transistor Q1 is grounded through the current limiting resistor R4 and is connected to the gate of PMOS transistor Q2. The drain of PMOS transistor Q2 outputs the protection voltage.

2. The control circuit according to claim 1, characterized in that, The communication module (32) consists of a power supply voltage, a filter capacitor C3, a communication conversion chip, a current limiting resistor R1, a CANH signal, and a CANL signal. The power supply voltage is connected to the Vcc port of the communication conversion chip through the filter capacitor C3. The CANH port of the communication conversion chip outputs the CANH signal, and the CANL port of the communication conversion chip outputs the CANL signal. The current limiting resistor R1 is connected between the CANH port and the CANL port.

3. The control circuit according to claim 2, characterized in that, The human-computer interaction module (34) consists of a filter capacitor C4, an interaction conversion chip, a power supply voltage, and a COM common terminal. The filter capacitor C4 is connected to the V- port of the interaction conversion chip, the VCC port of the interaction conversion chip is connected to the power supply voltage, the T_OUT port of the interaction conversion chip is connected to port 4 of the COM common terminal, and the R_IN port of the interaction conversion chip is connected to port 6 of the COM common terminal.

4. The circuit according to claim 3, characterized in that, The power supply module (1) consists of an external power supply, a rectifier circuit, a power chip, filter capacitors C1 and C2, and a constant voltage. The external power supply is connected to the Vin port of the power chip through the rectifier circuit. The Vout port of the power chip outputs the power supply voltage. The Vin port and Vout port of the power chip are connected in parallel with filter capacitors C1 and C2, respectively.

5. The circuit according to claim 4, characterized in that, The display module (2) consists of a display screen, a first display voltage, and a second display voltage. The VCC port of the display screen is connected to the first display voltage, and the BL+ port of the display screen is connected to the second display voltage.

6. The circuit according to claim 5, characterized in that, The power supply chip is model 7805, the display screen is model LCD1602, the communication conversion chip is model TLE6250, and the interaction conversion chip is model ADM101E.

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