CN216401205U

CN216401205U - 7kW American standard control panel exchanges

Info

Publication number: CN216401205U
Application number: CN202123219476.9U
Authority: CN
Inventors: 李信南; 张宏宾; 朱德荣
Original assignee: Huizhou Seelop New Energy Technology Co ltd
Current assignee: Huizhou Seelop New Energy Technology Co ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-04-29
Anticipated expiration: 2031-12-17

Abstract

The utility model discloses an alternating current 7kW American standard control board, wherein a microcontroller, a relay and a relay output bonding fault detection circuit are arranged in the control board; the relay is arranged on a power output line in the control panel and is connected with the microcontroller; the relay output bonding fault detection circuit is electrically connected with the microcontroller and the relay. The utility model provides a relay output bonding fault detection circuit in the control panel detects whether break-make, adhesion of relay according to the data of gathering, and real time monitoring relay's actuation off-state can fully guarantee like this and fill electric pile's practical safety, and conveniently carries, can realize charging new energy automobile more conveniently, safely to can bring the convenience for the driver.

Description

7kW American standard control panel exchanges

Technical Field

The utility model relates to the technical field of new energy automobile charging piles, in particular to an alternating current 7kW American standard control board.

Background

With the continuous development of new energy vehicles, the new energy vehicles on the market are more and more preserved, and the requirements on the charging safety performance are higher and higher. However, the alternating-current charging pile used for charging the new energy automobile in the market controls the on-off of the relay according to the collected signals of voltage, current, temperature and the like, so that the new energy automobile is charged. But alternating-current charging stake can not detect whether normal the state of relay, for example whether break-make, adhesion, therefore can't real time monitoring relay's actuation off-state, can not inform in advance and remind the trouble that the driver probably appears like this.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides the 7kW AC American standard control board which has the advantages of increasing the function of relay fault adhesion detection and improving the charging safety performance compared with the traditional single-phase wall-mounted charging pile, so that the charging of a new energy automobile can be better and safely monitored, and the convenient and safe charging experience can be brought to a driver.

A7 kW American standard control panel for alternating current is provided, wherein a microcontroller, a relay and a relay output adhesion fault detection circuit are arranged in the control panel; the relay is arranged on a power output line in the control panel and is connected with the microcontroller; the relay output bonding fault detection circuit is electrically connected with the microcontroller and the relay.

Preferably, the relay output adhesion fault detection circuit includes a diode D1, a diode D2, a photocoupler U1, a photocoupler U2, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, and a resistor R6; a first input end of the photoelectric coupler U1 is connected to a first power output line through a diode D1, a first output end of the photoelectric coupler U1 is sequentially connected with a resistor R1 and a resistor R2, a second input end of the photoelectric coupler U1 is connected with a 3.3V power supply end, a second output end of the photoelectric coupler U1 is connected with a resistor R3, the other end of the resistor R3 is connected to the ground, and a second output end of the photoelectric coupler U1 is also connected with the microcontroller; the first input end of the photoelectric coupler U2 is connected to a second power output line through a diode D2, the first output end of the photoelectric coupler U2 is sequentially connected with a resistor R4 and a resistor R5, the second input end of the photoelectric coupler U2 is connected with a 3.3V power supply end, the second output end of the photoelectric coupler U2 is connected with a resistor R6, the other end of the resistor R6 is connected to the ground, and the second output end of the photoelectric coupler U2 is further connected with the microcontroller.

Preferably, the control panel is also provided with an emergency stop button for interrupting the power supply system of the relay, the emergency stop button being further connected with the microcontroller.

Preferably, an auxiliary power supply, a temperature sensor and a grounding detection module are also arranged in the control panel; an input connecting terminal and an output connecting terminal are respectively arranged at two ends of the power output line; the auxiliary power supply, the temperature sensor and the grounding detection module are all connected with the microcontroller; the auxiliary power supply is also electrically connected with the input power supply wiring terminal.

Preferably, the control board is also internally provided with a PWM voltage detection module and a PWM output module;

the PWM output module is connected between the microcontroller and the charging gun, and the PWM voltage detection module is connected with the microcontroller and the PWM output module.

Preferably, an LCD display screen is installed on the control panel and is electrically connected with the microcontroller.

Preferably, an indicator light is mounted on the control board, and the indicator light is electrically connected with the microcontroller.

Preferably, the control panel is also provided with a card reader module for starting card swiping or deducting card swiping, and the card reader module is electrically connected with the microcontroller.

Preferably, a Wi-Fi module and a Bluetooth module are further arranged in the control panel, and the Wi-Fi module and the Bluetooth module are electrically connected with the microcontroller.

Compared with the prior art, the application has the following beneficial effects:

the utility model provides a relay output bonding fault detection circuit in the control panel is according to the data (ADC acquisition level) of gathering, detect whether break-make of relay, the adhesion, real time monitoring relay's actuation off-state, this relay output bonding fault detection mainly is if detect the relay contact when the relay disconnection still be the state of actuation, the control panel in time informs the trouble through display screen and pilot lamp and reminds the driver, can fully guarantee the practical safety of a kind of interchange 7kW American standard control panel like this, and conveniently carry, can be more convenient, realize charging to new energy automobile safely, thereby can bring conveniently for the driver.

Drawings

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 embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic circuit diagram of an AC 7kW American standard control board according to the present invention.

Fig. 2 is a first circuit diagram of a relay output adhesion failure detection circuit of the present invention.

Fig. 3 is a second circuit diagram of the relay output adhesion failure detection circuit of the present invention.

Detailed Description

In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the various embodiments of the present invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the utility model. That is, in some embodiments of the utility model, such implementation details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

In addition, the descriptions related to the first, the second, etc. in the present invention are only used for description purposes, do not particularly refer to an order or sequence, and do not limit the present invention, but only distinguish components or operations described in the same technical terms, and are not understood to indicate or imply relative importance or implicitly indicate the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

As shown in FIG. 1, the electric pile that fills of this application includes the rifle that charges and exchanges 7kW American standard control panel, and the control panel passes through the charging wire electricity with the rifle that charges and connects. A built-in microcontroller, relay and relay output bonding fault detection circuit of an AC 7kW American standard control board; the relay is arranged on a power output line in the control panel and is connected with the microcontroller; the relay output bonding fault detection circuit is electrically connected with the microcontroller and the relay.

In the present embodiment, as shown in fig. 2 and 3, the relay output adhesion fault detection circuit includes a diode D1, a diode D2, a photocoupler U1, a photocoupler U2, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, and a resistor R6; a first input end (pin 1) of the photoelectric coupler U1 is connected to a first power output line through a diode D1, the anode of a diode D1 is connected to the first power output line as an L _ OUT end pin, a first output end (pin 2) of the photoelectric coupler U1 is sequentially connected with a resistor R1 and a resistor R2, a second input end (pin 4) of the photoelectric coupler U1 is connected with a 3.3V power supply end, a second output end (pin 3) of the photoelectric coupler U1 is connected with the resistor R3, the other end of the resistor R3 is connected to the ground, and a second output end of the photoelectric coupler U1 is also used as a connection of an S1_ CONCATOR pin and the microcontroller; the first input end (pin 1) of the photoelectric coupler U2 is connected to a second power output line through a diode D2, the anode of the diode D2 is connected to the second power output line as an N _ OUT end pin, the first output end (pin 2) of the photoelectric coupler U2 is sequentially connected with a resistor R4 and a resistor R5, the second input end (pin 4) of the photoelectric coupler U2 is connected with a 3.3V power supply end, the second output end (pin 3) of the photoelectric coupler U2 is connected with the resistor R6, the other end of the resistor R6 is connected to the ground, and the second output end of the photoelectric coupler U2 is also used as the connection between an S2_ CONCATOR pin and the microcontroller. The first power output line is a live wire, and the second power output line is a zero line. L _ OUT is output of alternating current L (live wire), N _ OUT is output of alternating current N (zero wire), ACN _ HOLE is input of alternating current N, and ACL _ HOLE is input of alternating current L.

In this embodiment, the microcontroller is a single chip microcomputer, and the model is GD32F303VET 6.

The principle that whether the state of control panel real time monitoring relay is normal of this application is as follows:

microcontroller controls the relay break-make according to the data (voltage, electric current, temperature, electric leakage, PWM signal) of gathering, specifically is that MCU controls the break-make of relay through the high low level of control IO pin:

when the pin of the 1 MCU outputs a high level, the current flows through the coil of the relay, and the relay absorbs the current.

When the pin of the 2 MCU outputs a low level, no current flows through the coil of the relay, and the relay is disconnected.

The relay output bonding fault detection circuit detects whether the relay is on or off and adhered according to the collected data (ADC obtains the level), the suction off state of the relay is monitored in real time, the relay output bonding fault detection mainly detects that the relay contact is still in the suction state when the relay is off, and the control panel informs the fault through a display screen and an indicator lamp in time to remind a driver of the fault. Specifically, since the L _ OUT pin, the N _ OUT pin and the power line output line are connected, the S1_ CONCATOR pin and the S2_ CONCATOR are connected to the single chip pin, and when there is no output, the L _ OUT and the N _ OUT are floating, there is no voltage between the L _ OUT and the ACN _ hold, and then the S1_ CONCATOR is no signal. If the relay outputs, voltage between L _ OUT and ACN _ HOLE is detected, which indicates that the relay is stuck. When the relay is not disconnected, the single chip microcomputer detects a signal and the LCD reports the relay fault to prompt a user.

In this embodiment, the control panel is further provided with an emergency stop button for interrupting the power supply system of the relay, the emergency stop button being further connected to the microcontroller. According to the emergency stop control system, the power supply system of the relay is interrupted, the relay hardware is disconnected and no current is output, the state is fed back to the charging pile control board, and the display screen displays the emergency stop fault.

In this embodiment, an auxiliary power supply, a temperature sensor and a grounding detection module are also arranged in the control board; an input connecting terminal and an output connecting terminal are respectively arranged at two ends of the power output line; the auxiliary power supply, the temperature sensor and the grounding detection module are all connected with the microcontroller; the auxiliary power supply is also electrically connected with the input power supply wiring terminal. Through temperature sensor, temperature detection module can detect the temperature in the control panel to make the judgement according to the temperature data of gathering, whether there is the excess temperature. The grounding detection module is used for monitoring whether the grounding wire is in good contact in real time, and judging whether the grounding wire is in good contact or not according to the collected grounding data.

In this embodiment, the control board is further internally provided with a PWM voltage detection module and a PWM output module; the PWM output module is connected between the microcontroller and the charging gun, and the PWM voltage detection module is connected with the microcontroller and the PWM output module. The PWM output module outputs PWM signals with corresponding duty ratios and can recover the voltage of the PWM signals. The specific working principle is as follows: the MCU generates a PWM signal with a 3.3V level, and the PWM signal is converted into a PWM signal with +/-12V through the PWM output module, wherein the PWM signal is an identification signal for charging the electric automobile. In the process, the MCU can also realize PWM self level monitoring through the PWM voltage detection module. Therefore, through the setting of PWM voltage detection module and PWM output module, fill electric pile and can carry out the communication with new energy automobile, acquire the charged state.

In this embodiment, install the LCD display screen on the control panel, the LCD display screen is connected with microcontroller electricity. Through the setting of display screen, the display screen can show each item data of filling electric pile in real time, for example charge, overflow, excess temperature, relay fault warning protection's demonstration.

In this embodiment, the control panel is provided with an indicator light, and the indicator light is electrically connected with the microcontroller. Through the setting of pilot lamp, the status of charging new energy automobile can be instructed to the pilot lamp.

In this embodiment, the control board is further provided with a card reader module for starting card swiping or charging card swiping, and the card reader module is electrically connected with the microcontroller.

In this embodiment, the control panel is further internally provided with a Wi-Fi module and a Bluetooth module, and the Wi-Fi module and the Bluetooth module are both electrically connected with the microcontroller.

It should be noted that the relay output adhesion fault detection circuit, the auxiliary power supply, and the ground fault detection module are all conventional, and are not specifically limited herein.

The novel energy automobile charger comprises a relay output adhesion fault detection circuit, can monitor the suction disconnection state of the relay in real time, and ensures the normal use of the relay, so that the novel energy automobile charger can charge a new energy automobile more conveniently and safely, and can bring convenience to a driver, and is convenient to install, supports wireless control, and has higher safety factor.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The utility model provides an exchange 7kW beautiful mark control panel which characterized in that: microcontroller, relay and relay output adhesion fault detection circuit;

the relay is arranged on a power output line in the control panel and is connected with the microcontroller; the relay output bonding fault detection circuit is electrically connected with the microcontroller and the relay.

2. An AC 7kW American standard control board according to claim 1, characterized in that: the relay output adhesion fault detection circuit comprises a diode D1, a diode D2, a photoelectric coupler U1, a photoelectric coupler U2, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5 and a resistor R6;

a first input end of the photoelectric coupler U1 is connected to a first power output line through a diode D1, a first output end of the photoelectric coupler U1 is sequentially connected with a resistor R1 and a resistor R2, a second input end of the photoelectric coupler U1 is connected with a 3.3V power supply end, a second output end of the photoelectric coupler U1 is connected with a resistor R3, the other end of the resistor R3 is connected to the ground, and a second output end of the photoelectric coupler U1 is also connected with the microcontroller;

the first input end of the photoelectric coupler U2 is connected to a second power output line through a diode D2, the first output end of the photoelectric coupler U2 is sequentially connected with a resistor R4 and a resistor R5, the second input end of the photoelectric coupler U2 is connected with a 3.3V power supply end, the second output end of the photoelectric coupler U2 is connected with a resistor R6, the other end of the resistor R6 is connected to the ground, and the second output end of the photoelectric coupler U2 is further connected with the microcontroller.

3. An AC 7kW American standard control board according to claim 1, characterized in that: the control panel is also provided with an emergency stop button for interrupting a power supply system of the relay, and the emergency stop button is also connected with the microcontroller.

4. An AC 7kW American standard control board according to claim 1, characterized in that: an auxiliary power supply, a temperature sensor and a grounding detection module are also arranged in the control panel; an input connecting terminal and an output connecting terminal are respectively arranged at two ends of the power output line;

the auxiliary power supply, the temperature sensor and the grounding detection module are all connected with the microcontroller; the auxiliary power supply is also electrically connected with the input power supply wiring terminal.

5. The AC 7kW American standard control board according to claim 1, wherein a PWM voltage detection module and a PWM output module are further built in the control board;

6. The AC 7kW American standard control board as recited in claim 1, wherein an LCD display screen is mounted on the control board, and the LCD display screen is electrically connected with the microcontroller.

7. The 7kW alternating current American standard control board is characterized in that an indicator lamp is mounted on the control board and is electrically connected with a microcontroller.

8. The 7kW AC American standard control board as recited in claim 1, wherein a card reader module for starting card swiping or deducting card swiping is further arranged on the control board, and the card reader module is electrically connected with the microcontroller.

9. The AC 7kW American standard control board as recited in claim 1, wherein a Wi-Fi module and a Bluetooth module are further arranged in the control board, and both the Wi-Fi module and the Bluetooth module are electrically connected with the microcontroller.