Charging pile emergency power supply system capable of being monitored and controlled in real time

Abstract

The utility model discloses a charging pile emergency power supply system capable of being monitored and controlled in real time, which comprises a central processing unit (CPU), a communication system, a mains supply monitoring system, a power supply switching system, a voltage stabilizing and reducing system, a hardware restarting system, a charging control system and a super capacitor voltage equalizing system, the mains supply monitoring system is used for monitoring current signals of mains supply, the power supply switching system is used for switching circuits and connecting the mains supply or a standby power supply into the circuits, and the voltage stabilization and voltage reduction system is used for ensuring stable charging of the standby power supply. The charging pile is restarted by using the hardware restarting system in the standby power supply state, so that the charging pile ends the current order, uploads the charging data and unlocks the charging pile gun head, thereby solving the problem that the gun head is locked when the commercial power is cut off.

Description

Technical Field

[0001] This utility model relates to the field of charging pile circuit technology, specifically to an emergency power supply system for charging piles that can be monitored and controlled in real time. Background Technology

[0002] Existing charging stations inevitably experience power outages during vehicle charging due to various factors such as climate, geographical environment, and power infrastructure development. This is especially true in remote rural areas with lagging power grid development, older urban residential areas with aging infrastructure, industrial or large commercial areas with high electricity consumption and heavy grid loads, and areas prone to natural disasters. In the event of a power outage, charging is immediately interrupted, the charging gun remains locked, and charging order data is lost. This results in two problems: firstly, users cannot unlock the charging gun, rendering their vehicles immobile and causing inconvenience to all users at the charging station; secondly, the loss of all charging station order data leads to significant economic losses for the charging station operating company.

[0003] When charging a vehicle, it is inevitable that the main control board program will crash or the main control unit of the charging pile will freeze. Sometimes, when troubleshooting on-site, the problem can be solved simply by the engineer restarting the charging pile. This also brings a lot of unnecessary trouble to the operation and maintenance of the charging pile. Utility Model Content

[0004] The purpose of this utility model is to provide an emergency power supply system for charging piles that can be monitored and controlled in real time. The system monitors the power outage situation of the mains power through the mains power monitoring system. Based on the monitored power outage situation, the charging pile can smoothly switch the power supply. When the backup power supply is in operation, the charging pile can be restarted using a hardware restart system, so that the charging pile can end the current order, upload charging data, and unlock the charging gun head, thereby solving the problem of the charging gun head being locked when the mains power fails.

[0005] This utility model provides the following technical solution: a charging pile emergency power supply system that can be monitored and controlled in real time, including a CPU, a communication system, a mains power monitoring system, a power switching system, a voltage stabilization and step-down system, a hardware restart system, a charging control system, and a supercapacitor voltage equalization system. The communication system is used to transmit signals, the mains power monitoring system is used to monitor the mains power current signal, the power switching system is used to switch the circuit and connect the mains power or the backup power supply into the circuit, and the voltage stabilization and step-down system is used to ensure the stability of the backup power supply charging.

[0006] The power switching system includes an electrical controller, a third semiconductor device, a fourth semiconductor device, and a third resistor. The power switching system is connected to two currents: the first current is mains power, and the second current is a backup power supply. The mains power is connected to the third resistor, the fourth semiconductor device is connected to the mains power, and the other end of the fourth semiconductor device is grounded. The backup power supply is connected to one end of the third semiconductor device, and the other end of the third semiconductor device is connected to the output terminal of the electrical controller.

[0007] Furthermore, the mains power monitoring system includes a fifth semiconductor device, a sixth semiconductor device, a first resistor, and a second resistor. One end of the fifth semiconductor device is connected to the second signal output terminal of the CPU through the first resistor, and the other end is grounded through the second resistor. One end of the sixth semiconductor device is connected to the mains power circuit, and the other end is grounded.

[0008] Furthermore, the hardware restart system includes a first semiconductor device, a second semiconductor switching device, a fourth resistor, a fifth resistor, and a first signal output terminal. The CPU generates a drive signal. The first semiconductor device includes three terminals: the first terminal is connected to the fourth and fifth resistors, the second terminal is connected to the fifth resistor and ground, and the third terminal is connected to the control terminal of the second semiconductor device. The other end of the fourth resistor is connected to the first signal output terminal of the CPU.

[0009] Furthermore, the first semiconductor device is controlled by a signal from the first signal output terminal, the second semiconductor switch is controlled by the first semiconductor device, and the second semiconductor switch controls the power output of the entire system.

[0010] Furthermore, the second semiconductor switching device includes an upper terminal, a middle terminal, and a lower terminal. The upper terminal is connected to the output terminal of the electrical control device and is also connected to a sixth resistor. The middle terminal is connected to the third terminal of the first semiconductor device, and the lower terminal is connected to an output current.

[0011] Furthermore, the output of the electrical control device includes two paths: one path connects to the CPU via a step-down system to provide power to the CPU, and the other path enters the supercapacitor voltage equalization system via the charging control system to charge the supercapacitor, which serves as a backup power source for the main control of the charging pile.

[0012] Furthermore, in the charging control system, when the voltage is lower than a certain fixed voltage value, constant current charging is used, and when the voltage is higher than a certain fixed voltage value, constant voltage charging is used.

[0013] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: by monitoring the power outage situation of the mains power through the mains power monitoring system, the charging pile can smoothly switch the power supply based on the monitored power outage situation, and restart the charging pile using the hardware restart system when the backup power supply is in operation, so that the charging pile can end the current order, upload charging data, and unlock the charging gun head, thereby solving the problem of the gun head being locked when the mains power is out. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 This is a flowchart of the present invention;

[0016] Figure 2 This is the circuit schematic diagram of this utility model;

[0017] In the diagram: D1, first semiconductor device; D2, second semiconductor switching device; D3, third semiconductor device; D4, fourth semiconductor device; D5, fifth semiconductor device; D6, sixth semiconductor device; R1, first resistor; R2, second resistor; R3, third resistor; R4, fourth resistor; R5, fifth resistor; R6, sixth resistor; S1, electrical control device; signal1, first signal output terminal; signal2, second signal output terminal; i1, mains power; i2, backup power supply. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1 and Figure 2 This utility model provides a technical solution: an emergency power supply system for charging piles that can be monitored and controlled in real time, including a CPU, a communication system, a mains power monitoring system, a power switching system, a voltage stabilization and step-down system, a hardware restart system, a charging control system, and a supercapacitor voltage equalization system. The communication system is used to transmit signals, the mains power monitoring system is used to monitor the current signal of the mains power i1, the power switching system is used to switch the circuit and connect the mains power i1 or the backup power i2 into the circuit, the hardware restart system is used to restart the main control of the charging pile that was shut down due to a power outage, and the voltage stabilization and step-down system is used to ensure the stable charging of the backup power i2.

[0020] The power switching system includes an electrical controller S1, a third semiconductor device D3, a fourth semiconductor device D4, and a third resistor R3. Two current paths are connected to the system: the first is the mains power i1, and the second is the backup power i2. The mains power i1 is connected to the third resistor R3, and the fourth semiconductor device D4 is connected to the mains power i1, with its other end grounded. The backup power i2 is connected to one end of the third semiconductor device D3, and the other end of D3 is connected to the output of the electrical controller S1. The third semiconductor device D3 acts as a freewheeling current. When the mains power i1 fails, there is a short time interval during the power switching process of the electrical controller S1, causing the charging pile's main control to lose power during this period. The third semiconductor device D3 ensures that the electrical controller S1 smoothly switches to supercapacitor power to maintain continuous power supply to the charging pile's main control during this interval. When the mains power i1 is supplying power normally, it enters the electrical controller S1 in two paths: one path enters the control coil of the electrical controller S1, energizing the control coil. When the electrical controller S1 is activated, the power supply switches from the backup power supply i2 to the mains power supply i1. Another power source is connected to the output of the electrical controller S1, which is divided into two paths: one connects to the CPU to power it, and the other provides power to the charging pile. When the mains power i1 fails, the input current of the electrical controller S1 is lost, and it switches back to the backup power supply i2. The backup power supply i2 originates from the supercapacitor voltage equalization system. After the backup power supply i2 is restarted by the hardware system, the current enters the voltage regulation system. After voltage regulation, the current provides power to the charging pile emergency power supply system and the entire charging pile main control system for a period of time. When the charging pile emergency power supply system detects the failure of the mains power i1, it sends a high-level signal to the CPU. The CPU communicates with the charging pile main control system through the communication system, thereby promptly ending the charging order, unlocking the charging gun, and sending charging pile power outage information, thus restarting the charging pile, protecting order data, and unlocking the charging gun for easy order termination.

[0021] The mains power monitoring system includes a fifth semiconductor device D5, a sixth semiconductor device D6, a first resistor R1, and a second resistor R2. One end of the fifth semiconductor device D5 is connected to the second signal output terminal signal2 of the CPU through the first resistor R1, and the other end is grounded through the second resistor R2. One end of the sixth semiconductor device D6 is connected to the mains power i1 circuit, and the other end is grounded. When the mains power i1 is powered, the sixth semiconductor device D6 outputs a high-level signal. When the mains power i1 is de-energized, the signal is grounded through the sixth semiconductor device D6, and the signal output is low-level. Through this mains power monitoring system, the mains power operating status can be monitored in real time, and commands can be sent to the charging pile master controller to terminate the charging pile order in a timely manner and unlock the charging gun head, etc.

[0022] The hardware restart system includes a first semiconductor device D1, a second semiconductor switching device D2, a fourth resistor R4, a fifth resistor R5, and a first signal output terminal signal1. The first signal output terminal signal1 is generated by the CPU. The first semiconductor device D1 includes three terminals: the first terminal is connected to the fourth resistor R4 and the fifth resistor R5, the second terminal is connected to the fifth resistor R5 and ground, and the third terminal is connected to the control terminal of the second semiconductor device. The other end of the fourth resistor R4 is connected to the first signal output terminal signal1 of the CPU.

[0023] The first semiconductor device D1 is controlled by the signal from the first signal output terminal signal1, and the second semiconductor switch device D2 is controlled by the first semiconductor device D1. The second semiconductor switch device D2 controls the power output of the entire system. The first signal output terminal signal1 first drives the first semiconductor device D1 to open and close, and the first semiconductor device D1 then drives the second semiconductor switch device D2 to open and close. The second semiconductor device D2 controls the on and off of the output terminal, thereby controlling the output terminal, cutting off or connecting the power supply of all main controllers of the charging pile, and thus realizing hardware restart.

[0024] The second semiconductor switching device D2 includes an upper terminal, a middle terminal, and a lower terminal. The upper terminal is connected to the output terminal of the electrical control device S1 and is also connected to the sixth resistor R6. The middle terminal is connected to the third terminal of the first semiconductor device D1, and the lower terminal is connected to the output current.

[0025] The output of the electrical control device S1 includes two paths. One path goes through the step-down system and connects to the CPU to provide power to the CPU. The other path goes through the charging control system and enters the supercapacitor voltage equalization system to charge the supercapacitor. The supercapacitor serves as the backup power supply i2 for the main control of the charging pile.

[0026] In the charging control system, when the voltage is lower than a certain fixed voltage value, constant current charging is used, and when the voltage is higher than a certain fixed voltage value, constant voltage charging is used, thus ensuring the stability of charging.

[0027] Emergency power supply system operation process: When the mains power fails, the input current of the electrical control device is lost, and the electrical control device switches to the backup power supply. The backup power supply comes from the supercapacitor voltage equalization system. After the backup power supply current is restarted by the hardware, it enters the voltage stabilization system. After voltage stabilization, the current provides power to the charging pile emergency power supply system and the entire charging pile main control for a period of time.

[0028] When the mains power fails, the mains power monitoring system of the charging pile sends a high-level signal to the CPU of the emergency power system. The CPU communicates with the main controller of the charging pile through the communication system, thereby promptly ending the charging order, unlocking the charging gun, and sending out power outage information to the charging pile.

[0029] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A charging pile emergency power supply system capable of real-time monitoring and control, characterized in that: It includes a CPU, a communication system, a mains power monitoring system, a power switching system, a voltage regulation and buck system, a hardware restart system, a charging control system, and a supercapacitor voltage equalization system. The communication system is used to transmit signals, the mains power monitoring system is used to monitor the mains power current signal, the power switching system is used to switch the circuit and connect the mains power or the backup power supply into the circuit, and the voltage regulation and buck system is used to ensure the stability of the backup power supply charging. The power switching system includes an electrical controller, a third semiconductor device, a fourth semiconductor device, and a third resistor. The power switching system is connected to two currents: the first current is mains power, and the second current is a backup power supply. The mains power is connected to the third resistor, the fourth semiconductor device is connected to the mains power, and the other end of the fourth semiconductor device is grounded. The backup power supply is connected to one end of the third semiconductor device, and the other end of the third semiconductor device is connected to the output terminal of the electrical controller.

2. The charging pile emergency power supply system with real-time monitoring and control according to claim 1, characterized in that: The mains power monitoring system includes a fifth semiconductor device, a sixth semiconductor device, a first resistor, and a second resistor. One end of the fifth semiconductor device is connected to the second signal output terminal of the CPU through the first resistor, and the other end is grounded through the second resistor. One end of the sixth semiconductor device is connected to the mains power circuit, and the other end is grounded.

3. The charging pile emergency power supply system with real-time monitoring and control according to claim 1, characterized in that: The hardware restart system includes a first semiconductor device, a second semiconductor switching device, a fourth resistor, a fifth resistor, and a first signal output terminal. The CPU generates a drive signal. The first semiconductor device includes three terminals: the first terminal is connected to the fourth and fifth resistors, the second terminal is connected to the fifth resistor and ground, and the third terminal is connected to the control terminal of the second semiconductor device. The other end of the fourth resistor is connected to the first signal output terminal of the CPU.

4. The charging pile emergency power supply system with real-time monitoring and control according to claim 3, characterized in that: The first semiconductor device is controlled by a signal from the first signal output terminal, the second semiconductor switch is controlled by the first semiconductor device, and the second semiconductor switch controls the power output of the entire system.

5. The charging pile emergency power supply system with real-time monitoring and control according to claim 3, characterized in that: The second semiconductor switching device includes an upper terminal, a middle terminal, and a lower terminal. The upper terminal is connected to the output terminal of the electrical control device and is also connected to a sixth resistor. The middle terminal is connected to the third terminal of the first semiconductor device, and the lower terminal is connected to an output current.

6. The charging pile emergency power supply system with real-time monitoring and control according to claim 1, characterized in that: The output of the electrical control device includes two paths: one path connects to the CPU via a step-down system to provide power to the CPU, and the other path enters the supercapacitor voltage equalization system via the charging control system to charge the supercapacitor. The supercapacitor serves as a backup power source for the main control of the charging pile.

7. The charging pile emergency power supply system with real-time monitoring and control according to claim 6, characterized in that: In the charging control system, when the voltage is lower than a certain fixed voltage value, constant current charging is used; when the voltage is higher than a certain fixed voltage value, constant voltage charging is used.

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