Charging pile with power failure early warning function

Abstract

The utility model relates to the technical field of charging piles, and provides a charging pile with a power failure early warning function. Comprising a charging base, a single-chip microcomputer control circuit arranged on the charging base, a power socket, an AC-to-DC output circuit, a relay output control circuit, a power-off change-over switch, a storage battery, a battery charging circuit, a voltage detection circuit, a cloud server, a platform server and an LTE module, and the battery charging circuit is connected with the storage battery to charge the storage battery. The storage battery supplies power to the single-chip microcomputer control circuit and the LTE module through the power-off change-over switch, the voltage detection circuit detects the voltage of the battery charging circuit in real time, and the output end of the voltage detection circuit is connected with the input end of the single-chip microcomputer control circuit. The single-chip microcomputer control circuit judges that the charging base is powered off according to detection information of the voltage detection circuit and sends alarm information to the LTE module. According to the utility model, the problem that the power-off condition caused by the damage or theft of the existing charging pile cannot be known effectively is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of charging piles, in particular to a charging pile with power-off warning. Background Art

[0002] In recent years, battery-powered vehicles have become one of the main means of transportation for people to travel. Limited by the space of the vehicle body, the battery capacity of battery-powered vehicles is usually not very large, and they need to be charged frequently. Each year, more than 70% of the fire accidents are caused by the charging of battery-powered vehicles, resulting in large casualties and property losses. With the continuous increase in the number of battery-powered vehicle users, the issue of charging safety for battery-powered vehicles has received increasing attention. To avoid the heating problem caused by long-term charging, the charging pile is equipped with a remote switch function, or through measures such as automatic power-off when full and overload protection, the probability of battery fire and explosion can be reduced to a certain extent. However, the power-off status of the charging pile cannot be effectively known, resulting in situations such as the charging pile not being repaired in time when it is powered off due to line damage and cannot be used, or being stolen and unable to give a power-off warning. Content of the Utility Model

[0003] Therefore, in view of the above problems, the utility model proposes a charging pile with power-off warning, which can effectively detect the power supply status of the charging pile, alarm when the charging pile is powered off, and facilitate timely maintenance for the convenience of users.

[0004] To solve this technical problem, the utility model adopts the following solutions: A charging pile with power-off warning includes a charging base, a single-chip microcomputer control circuit arranged on the charging base, a power socket, an AC-DC output circuit, and a relay output control circuit. The municipal power is connected to the input end of the AC-DC output circuit. The output end of the AC-DC output circuit is connected to the power socket through the relay output control circuit. The output end of the single-chip microcomputer control circuit is connected to and controls the relay output control circuit to control the power-off and power supply of the power socket. It also includes a power-off switch, a storage battery, a battery charging circuit, a voltage detection circuit, a cloud server, a platform server, and an LTE module. The output end of the AC-DC output circuit is respectively connected to the single-chip microcomputer control circuit, the LTE module, the battery charging circuit, and the power-off switch. The battery charging circuit is connected to the storage battery to charge the storage battery. The storage battery supplies power to the single-chip microcomputer control circuit and the LTE module through the power-off switch. The voltage detection circuit real-time detects the voltage of the battery charging circuit, and the output end of the voltage detection circuit is connected to the input end of the single-chip microcomputer control circuit. The single-chip microcomputer control circuit combines the detection information of the voltage detection circuit to judge that the charging base is powered off and sends an alarm message to the LTE module. The LTE module sends the warning message to the platform server for alarm through the cloud server.

[0005] For further improvement, the single-chip microcomputer control circuit is an HC32F176KATA chip and its peripheral circuit.

[0006] For further improvement, the LTE module is an ML307A chip and its peripheral circuit.

[0007] For further improvement, it further includes a smartphone APP, and the platform server is communicatively connected to the smartphone APP to transmit power-off warning information.

[0008] For further improvement, it further includes a power detection circuit, which is arranged between the AC-DC output circuit and the relay output control circuit to detect the power consumption of the power socket, and the output end of the power detection circuit is connected to the input end of the single-chip microcomputer control circuit.

[0009] For further improvement, it further includes a fault indicator light, and the output end of the single-chip microcomputer control circuit is connected to the fault indicator light for power-off fault display.

[0010] By adopting the foregoing technical solution, the beneficial effects of the present utility model are as follows: By setting a power-off switching switch, a storage battery, a battery charging circuit, a voltage detection circuit, a power detection circuit, a cloud server, a platform server, and an LTE module in the charging base of the existing charging pile in cooperation, that is, when a power-off is caused by a fault such as a damaged line or theft, the voltage detection circuit detects that there is no voltage in the battery charging circuit for charging the storage battery, and at the same time, the AC-DC output circuit is powered off, so that the power-off switching switch switches to the storage battery to supply power to the single-chip microcomputer control circuit and the LTE module. Combining the two, the single-chip microcomputer control circuit can determine whether the power-off is caused by a power supply cut-off of the charging pile or damage / theft, etc. At this time, the single-chip microcomputer control circuit immediately sends an alarm message of the power-off fault of the charging base to the LTE module, and then the LTE module sends the power-off fault warning information to the platform server for alarm through the cloud server, enabling the background maintenance personnel to immediately repair the faulty charging pile, effectively detecting the power supply status of the charging pile, alarming for the power-off of the charging pile, facilitating timely maintenance and making it convenient for users to use. Through further setting, that is, the setting of the smartphone APP facilitates the platform server to quickly notify the corresponding maintenance personnel for inspection and can be widely promoted and applied. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is the circuit principle block diagram of the embodiment of the present utility model;

[0012] Figure 2 is the schematic diagram of the single-chip microcomputer control circuit of the embodiment of the present utility model;

[0013] Figure 3 is the schematic diagram of the LTE module circuit of the embodiment of the present utility model;

[0014] Figure 4 is the schematic diagram of the relay output control circuit according to an embodiment of the present utility model;

[0015] Figure 5 is the schematic diagram of the storage battery and battery charging circuit according to an embodiment of the present utility model;

[0016] Figure 6 is the schematic diagram of the voltage detection circuit according to an embodiment of the present utility model;

[0017] Figure 7 is the schematic diagram of the AC to DC output circuit according to an embodiment of the present utility model;

[0018] Figure 8 is the schematic diagram of the power detection circuit according to an embodiment of the present utility model. Detailed implementation manners

[0019] The present utility model will be further described below in conjunction with the accompanying drawings and specific implementation manners. Among them, the power-off switching switch, power detection circuit, cloud server, and platform server are all existing module circuits, and the platform server is the server for the background application of the management, maintenance, and operation of the entire charging pile system.

[0020] Refer to Figures 1 - 8, preferably, the charging pile with power-off warning of the present utility model includes a charging base, a single-chip microcomputer control circuit 1 arranged on the charging base, a power socket, an AC-DC output circuit 2, a relay output control circuit 3, a power-off switching switch 4, a storage battery 5, a battery charging circuit 6, a voltage detection circuit 7, a power consumption detection circuit 8, a cloud server 9, a platform server 10 and an LTE module 11. The single-chip microcomputer control circuit 1 is an HC32F176KATA chip and its peripheral circuit, and the LTE module 11 is an ML307A chip and its peripheral circuit. The mains power is connected to the input end of the AC-DC output circuit 2. The output end of the AC-DC output circuit 2 is connected to the power socket through the relay output control circuit 3. The output end of the single-chip microcomputer control circuit 1 is connected to and controls the relay output control circuit 3 to control the power-off and power supply of the power socket. The output end of the AC-DC output circuit 2 is respectively connected to the single-chip microcomputer control circuit 1, the LTE module 11, the battery charging circuit 6 and the power-off switching switch 4. The battery charging circuit 6 is connected to the storage battery 5 to charge the storage battery 5. The storage battery 5 supplies power to the single-chip microcomputer control circuit 1 and the LTE module 11 through the power-off switching switch 4. When the mains power is cut off, the power-off switching switch 4 closes to make the storage battery 5 supply power to the single-chip microcomputer control circuit 1 and the LTE module 11. The voltage detection circuit 7 detects the voltage of the battery charging circuit 6 in real time, and the output end of the voltage detection circuit 7 is connected to the input end of the single-chip microcomputer control circuit 1. The power consumption detection circuit 8 is arranged between the AC-DC output circuit 2 and the relay output control circuit 3 to detect the power consumption of the power socket, and the output end of the power consumption detection circuit 8 is connected to the input end of the single-chip microcomputer control circuit 1. The single-chip microcomputer control circuit 1 comprehensively judges that the charging base is powered off by combining the detection information of the voltage detection circuit 7 and the fact that the single-chip microcomputer control circuit 1 is powered by the storage battery 5, and sends an alarm message to the LTE module 11. The LTE module 11 sends the warning message to the platform server 10 for alarm through the cloud server 9.

[0021] Reference Figure 4 , the relay output control circuit 3 is divided into two groups of control outputs and is respectively connected to two power sockets. The first group consists of a triode Q1, a relay REL1, resistors R61 and R71; the second group consists of a triode Q2, a relay REL2, resistors R62 and R72. The HC32F176KATA chip of the single-chip microcomputer control circuit 1 controls the conduction or disconnection of the triode Q1 or the triode Q2 by pulling up or pulling down the base of the triode Q1 or the triode Q2, so that the coil of the relay REL1 or the relay REL2 is energized / powered off, achieving the effect of attracting or disconnecting the relay REL1 or the relay REL2. When the relay REL1 or the relay REL2 is attracted, the neutral wire of the power socket output circuit is energized, and the external charging device can be powered. When the relay REL1 or the relay REL2 is disconnected, the neutral wire of the power socket output circuit is open-circuited and cannot be externally powered.

[0022] Reference Figure 5 Figure 5 , the battery charging circuit 6 is composed of resistors R50, R52, R88, R89, capacitor E1, diode D12, field-effect transistor Q12, and dedicated charging chip U12. When the AC power supply is normal, the device is powered by the DC 12V converted from AC. The dedicated charging chip U12 generates a voltage to charge the battery 5 BATT. At this time, due to the cutoff of the field-effect transistor Q12, the battery 5 only charges and does not supply power. When the AC power is cut off, the field-effect transistor Q12 conducts forward, and the battery 5 supplies power to the device, ensuring that the device can transmit the AC power-off information to the HC32F176KATA chip of the microcontroller control circuit 1 and notify the user of the AC power-off information through the LTE module, so as to promptly troubleshoot and restore the AC power.

[0023] Reference Figure 8 Figure 8 , the power detection circuit 8 detects the power in two ways. The first way consists of resistors R1, R2, R21, capacitors C1, C2, and the third and fourth pin I / O ports of the metering and detection chip U6. The second way consists of resistors R3, R4, R22, capacitors C3, C4, and the fifth and sixth pin I / O ports of the metering and detection chip U6. When the charging port of the power socket connected to the first way supplies power externally, a voltage is generated at both ends of the resistor R21 and is respectively transmitted to the third and fourth pin I / O ports of the metering and detection chip U6. The metering and detection chip U6 calculates the real-time current passing through the resistor R21 to obtain the corresponding power, and communicates with the HC32F176KATA chip of the microcontroller control circuit 1 through the serial port to transmit the real-time charging power and the total charging power. The principle of the second way is the same as that of the first way.

[0024] Reference Figure 6 Figure 6 , the voltage detection circuit 7 is composed of resistors R44, R45, R46, R47, R48, R49, and capacitor C21. Resistors R44, R45, R46, R47, R48 are in series, and resistor R49 is connected to resistor R48 to divide the voltage to the ground, obtaining a voltage and transmitting it to the metering and detection chip U6 of the power detection circuit 8. The metering and detection chip U6 of the power detection circuit 8 calculates the current AC voltage and transmits it to the HC32F176KATA chip of the microcontroller control circuit 1 through the serial port.

[0025] Reference Figure 7, the AC-DC conversion circuit 2 is composed of resistors R80, R81, R82, R83, capacitors C101, C102, C103, C10, C60, C61, diodes D3, D4, D8, inductors L1, L2, varistor RV1, square fuse F1, glass tube fuse F2, safety capacitor C110 and a dedicated AC-DC integrated chip U7. After the alternating current passes through the square fuse F1 and the glass tube fuse F2, it enters a filtering circuit composed of capacitors C101, C102 and inductor L1, and then enters the dedicated AC-DC integrated chip, where it is converted into a DC12V output to supply power to the whole machine.

[0026] In the above embodiment, the voltage value detected by the voltage detection circuit can also be directly transmitted to the single-chip microcomputer control circuit to collect the voltage value data.

[0027] Working principle: The mains power is converted into a DC voltage through the AC-DC output circuit to provide the working voltage required for the power socket, battery charging circuit, single-chip microcomputer control circuit and LTE module. The battery charging circuit charges the backup storage battery. When the user charges the electric vehicle, they only need to scan the QR code or swipe the card to connect the single-chip microcomputer control circuit. The single-chip microcomputer control circuit controls the relay output control circuit to close, so that the mains power supplies power to the electric vehicle charger plug on the power socket through the relay output control circuit and then charges the battery of the electric vehicle; the voltage detection circuit continuously detects the voltage of the battery charging circuit, and after being measured by the metering detection chip of the power detection circuit, it is sent to the single-chip microcomputer control circuit. When the voltage detection circuit collects no voltage information, and at the same time the AC-DC output circuit is powered off and the power-off switch is switched to the storage battery to supply power to the single-chip microcomputer control circuit and the LTE module, the two combined with the single-chip microcomputer control circuit can judge whether the power failure of the charging pile is caused by power failure, damage, theft, etc. At this time, the single-chip microcomputer control circuit immediately sends an alarm message of the charging seat power failure to the LTE module, and then the LTE module sends the power failure early warning information to the platform server through the cloud server for alarm, so that the background maintenance personnel can immediately repair the faulty charging pile.

[0028] In the above embodiment, a smartphone APP can also be added, that is, the platform server is communicatively connected to the smartphone APP to transmit the power failure early warning information, so that the alarm can be quickly sent to the relevant responsible person of the charging pile to immediately handle the alarm and quickly handle the power failure of the charging pile. A fault indicator light can also be added, and the output end of the single-chip microcomputer control circuit is connected to the fault indicator light for power failure fault display.

[0029] Although the present utility model is specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes can be made to the present utility model in terms of form and details without departing from the spirit and scope of the present utility model defined by the appended claims, and all such changes are within the protection scope of the present utility model.

Claims

1. A charging pile with power-off warning, comprising a charging base, a single-chip microcomputer control circuit arranged on the charging base, a power socket, an AC-DC output circuit, and a relay output control circuit. The mains power is connected to the input end of the AC-DC output circuit. The output end of the AC-DC output circuit is connected to the power socket through the relay output control circuit. The output end of the single-chip microcomputer control circuit is connected to and controls the relay output control circuit to control the power-off and power supply of the power socket. It is characterized in that: It further includes a power-off switching switch, a storage battery, a battery charging circuit, a voltage detection circuit, a cloud server, a platform server, and an LTE module. The output end of the AC-DC output circuit is respectively connected to the single-chip microcomputer control circuit, the LTE module, the battery charging circuit, and the power-off switching switch. The battery charging circuit is connected to the storage battery to charge the storage battery. The storage battery supplies power to the single-chip microcomputer control circuit and the LTE module through the power-off switching switch. The voltage detection circuit detects the voltage of the battery charging circuit in real time, and the output end of the voltage detection circuit is connected to the input end of the single-chip microcomputer control circuit. The single-chip microcomputer control circuit combines the detection information of the voltage detection circuit to judge that the charging base is powered off and sends an alarm message to the LTE module. The LTE module sends the early warning message to the platform server for alarm through the cloud server.

2. The charging pile with power-off warning according to claim 1, characterized in that: The single-chip microcomputer control circuit is an HC32F176KATA chip and its peripheral circuit.

3. The charging pile with power-off warning according to claim 1, wherein: The LTE module is an ML307A chip and its peripheral circuit.

4. The charging pile with power-off warning according to claim 1, characterized in that: It further includes a smartphone APP, and the platform server is communicatively connected to the smartphone APP to transmit the power-off early warning information.

5. The charging pile with power-off warning according to claim 1, characterized in that: It further includes a power consumption detection circuit, which is arranged between the AC-DC output circuit and the relay output control circuit to detect the power consumption of the power socket, and the output end of the power consumption detection circuit is connected to the input end of the single-chip microcomputer control circuit.

6. The charging pile with power-off warning according to claim 1, characterized in that: It further includes a fault indicator light, and the output end of the single-chip microcomputer control circuit is connected to the fault indicator light for power-off fault display.

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