A dual-mode power switching device for intelligent converged terminals

Abstract

This utility model relates to the field of terminal power switching technology, specifically a dual-mode power switching device for an intelligent fusion terminal. It includes a main power supply module, an energy storage battery, a supercapacitor C1, and a power switching circuit. The main power supply module and the energy storage battery are electrically connected to the input terminal of the power switching circuit. The output terminal of the power switching circuit is electrically connected to a power supply drive circuit. One end of the supercapacitor C1 is connected in parallel between the power switching circuit and the power supply drive circuit, and the other end of the supercapacitor C1 is grounded. This dual power supply system, consisting of a main power supply module and an energy storage battery, ensures continuous operation of the intelligent fusion terminal and effectively prevents equipment shutdown due to main power supply interruption. The addition of the supercapacitor allows it to discharge and supply power to the intelligent fusion terminal when both the main power supply module and the energy storage battery are simultaneously de-energized, ensuring stable equipment operation.

Description

Technical Field

[0001] This utility model relates to the field of terminal power switching technology, specifically to a dual-mode power switching power supply device for intelligent fusion terminals. Background Technology

[0002] As a power quality management device for distribution transformer areas, the intelligent integrated terminal optimizes and adjusts the power consumption of distribution transformer areas by collecting the operating status of equipment such as reactive power compensation devices and on-load tap changers, so that the voltage and power factor of the distribution transformer areas meet the standard requirements.

[0003] Currently, to ensure the operation of intelligent converged terminals, dual power supplies are commonly used to improve battery life and reliability. When the power supply line to the intelligent converged terminal is interrupted, the terminal switches to its own battery for self-powering. However, when the battery needs to be replaced due to low power, a restart operation is required. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a dual-mode power switching device for intelligent fusion terminals.

[0005] The technical solution of this utility model is as follows:

[0006] A dual-mode power switching device for an intelligent fusion terminal is electrically connected to the power supply drive circuit of the intelligent fusion terminal. The device includes a main power supply module, an energy storage battery, a supercapacitor C1, and a power switching circuit. The main power supply module and the energy storage battery are respectively electrically connected to the input terminal of the power switching circuit. The output terminal of the power switching circuit is electrically connected to the power supply drive circuit. One end of the supercapacitor C1 is connected in parallel between the power switching circuit and the power supply drive circuit, and the other end of the supercapacitor C1 is grounded.

[0007] The power supply switching circuit includes MOSFETs Q1 and Q2, resistors R1-R4, and diodes D1-D2. The anode of diode D1 is connected to the main power supply module and one end of resistor R1. The cathode of diode D1 is connected to one end of resistor R3 and the source of MOSFET Q1. Resistors R3 and R4 are connected in series to ground, and the series junction of resistors R3 and R4 is connected to the gate of MOSFET Q1. The other end of resistor R1 is connected to the gate of MOSFET Q2 and one end of resistor R2. The other end of resistor R2 is grounded. The anode of diode D2 is connected to the energy storage battery, the cathode of diode D2 is connected to the drain of MOSFET Q2, and the source of MOSFET Q2 is connected to the source of MOSFET Q1.

[0008] In a specific implementation, the main power supply module is connected to an external power grid transmission line for power supply.

[0009] To ensure the operational requirements of the intelligent fusion terminal, the supercapacitor C1 is rated at 5.5V 1.5F.

[0010] To prevent backflow of current, diodes D3-D4 are also provided between the power supply switching circuit and the power supply drive circuit. The output terminal of the power supply switching circuit is connected to the anode of diode D3, the cathode of diode D3 is connected to the supercapacitor C1 and the anode of diode D4 respectively, and the cathode of diode D4 is connected to the power supply drive circuit.

[0011] The intelligent fusion terminal dual-mode power switching power supply device also includes a battery management system, which is electrically connected to the energy storage battery.

[0012] The battery management system can wirelessly connect to a remote cloud terminal and remind maintenance personnel to replace the energy storage battery in a timely manner.

[0013] In a specific implementation, the energy storage battery is a replaceable rechargeable lithium battery.

[0014] Beneficial effects: This utility model is a dual-mode power switching device for an intelligent fusion terminal, equipped with a main power supply module and an energy storage battery as dual power sources. When the main power supply module is connected to the power grid and is supplying power normally, the power switching circuit transfers the power from the main power supply module to the power supply drive circuit to drive the intelligent fusion terminal. When the power grid is interrupted or the power supply is unstable, the power switching circuit can switch to the energy storage battery to ensure the continuous operation of the intelligent fusion terminal and effectively avoid the situation where the equipment stops working due to the interruption of the main power supply.

[0015] Meanwhile, the addition of a supercapacitor on the output side of the power supply switching circuit further ensures the stability of the power supply. When there is one input power supply on the input side of the power supply switching circuit, its output side supplies power to the intelligent fusion terminal while also charging the supercapacitor; when the main power supply module and the energy storage battery are simultaneously de-energized, the supercapacitor discharges to supply power to the intelligent fusion terminal, ensuring stable operation of the equipment. Attached Figure Description

[0016] The advantages and solutions of this application will become clear to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this invention.

[0017] In the attached diagram:

[0018] Figure 1 A schematic diagram of the dual-mode power switching power supply device for intelligent converged terminals;

[0019] Figure 2 The circuit structure diagram for the power supply switching circuit. Detailed Implementation

[0020] Exemplary embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings.

[0021] Example

[0022] See Figure 1 This embodiment provides a dual-mode power switching device for an intelligent fusion terminal, which is installed inside the intelligent fusion terminal and electrically connected to the power supply drive circuit of the intelligent fusion terminal. The device includes a main power supply module, an energy storage battery, a supercapacitor C1, and a power switching circuit. The main power supply module and the energy storage battery are respectively electrically connected to the input terminal of the power switching circuit. The main power supply module is externally connected to the power grid transmission line, enabling it to draw power from the power grid to provide power to the intelligent fusion terminal. When the power grid transmission line is de-energized, the power switching circuit can automatically switch to battery power supply from the energy storage battery. The output terminal of the power switching circuit is electrically connected to the power supply drive circuit, and the supercapacitor C1 is connected in parallel between the power switching circuit and the power supply drive circuit, with the other end of the supercapacitor C1 grounded. When there is one input power supply on the input side of the power switching circuit, its output side not only supplies power to the power supply drive circuit of the intelligent fusion terminal but also transfers power to the supercapacitor C1 for charging. When both the main power supply module and the energy storage battery are de-energized, the supercapacitor C1, electrically connected to the power supply drive circuit, can discharge and provide power to the intelligent fusion terminal.

[0023] In order to enable power switching between the main power supply module and the energy storage battery, such as Figure 2 As shown, the power supply switching circuit includes MOSFETs Q1 and Q2, resistors R1-R4, and diodes D1-D2. MOSFETs Q1 and Q2 are P-channel MOSFETs. The main power supply module is connected to one end of resistor R1 and one end of diode D1. The other end of diode D1 is connected to one end of resistor R3 and the source of MOSFET Q1. Resistors R3 and R4 are connected in series to ground, and the series junction of resistors R3 and R4 is connected to the gate of MOSFET Q1. The other end of resistor R1 is connected to the gate of MOSFET Q2 and one end of resistor R2, and the other end of resistor R2 is grounded. The energy storage battery is connected to the drain of MOSFET Q2 via diode D2. The source of MOSFET Q2 is connected to the source of MOSFET Q1, and the drain of MOSFET Q2 is connected to the power supply drive circuit.

[0024] The power supply switching circuit selects and switches the power supply through MOSFET Q1, while MOSFET Q2 acts as a switch to turn the energy storage battery on or off. When both the main power supply module and the energy storage battery are powered, the main power supply module is electrically connected to MOSFET Q1 via diode D1. The gate voltage of MOSFET Q2, after being divided by resistor R2, is less than the source voltage, so MOSFET Q2 is in the off state, and Q1 is in the on state. The power supply switching circuit turns off the energy storage battery's power supply path and turns on the main power supply module's power supply path, enabling the main power supply module to provide power. When the main power supply module is powered off, the gate voltage of MOSFET Q2 is zero, and Q2 connects the energy storage battery and MOSFET Q1, enabling the energy storage battery to be powered. When the main power supply module is powered off and the energy storage battery is depleted, both MOSFETs Q1 and Q2 are in the off state, and the power supply switching circuit has no voltage output.

[0025] When the power supply switching circuit has no voltage output, its output side supercapacitor C1 is connected to the power supply drive circuit of the intelligent fusion terminal, thereby realizing the full charge and discharge of supercapacitor C1. To meet the power supply requirements of the power supply drive circuit, the supercapacitor C1 is rated at 5.5V 1.5F. Furthermore, to prevent the supercapacitor from causing reverse current flow to the power supply switching circuit and damaging electronic components, diodes D3-D4 are also installed between the power supply switching circuit and the power supply drive circuit. The output terminal of the power supply switching circuit is connected to the anode of diode D3, the cathode of diode D3 is connected to the anodes of supercapacitor C1 and diode D4 respectively, and the cathode of diode D4 is connected to the power supply drive circuit.

[0026] To prevent the supercapacitor from completely discharging and the main power supply module from shutting down, causing the smart fusion terminal to lose power, the device also includes a battery management system. The battery management system is electrically connected to the energy storage battery and can detect the remaining battery power in real time. The battery management system is also wirelessly connected to a remote cloud terminal. When the energy storage battery power is lower than a threshold, an early warning signal is triggered and transmitted to the remote cloud terminal to remind maintenance personnel to rush to the site to replace the energy storage battery as soon as possible, ensuring the continuous operation of the smart fusion terminal when the power grid transmission line is cut off.

[0027] To ensure the long-term online operation of the intelligent integrated terminal in the event of a power outage in the power grid transmission line, the energy storage battery is a replaceable rechargeable lithium battery, which allows maintenance personnel to replace the energy storage battery at any time and ensures that the intelligent integrated terminal has sufficient backup power.

Claims

1. A dual-mode power supply switching power supply device for intelligent converged terminal, electrically connected with the power supply driving circuit of the intelligent converged terminal, characterized in that, The device includes a main power supply module, an energy storage battery, a supercapacitor C1, and a power supply switching circuit. The main power supply module and the energy storage battery are respectively electrically connected to the input terminal of the power supply switching circuit. The output terminal of the power supply switching circuit is electrically connected to the power supply drive circuit. One end of the supercapacitor C1 is connected in parallel between the power supply switching circuit and the power supply drive circuit, and the other end of the supercapacitor C1 is grounded. The power supply switching circuit includes MOSFETs Q1 and Q2, resistors R1-R4, and diodes D1-D2. The anode of diode D1 is connected to the main power supply module and one end of resistor R1. The cathode of diode D1 is connected to one end of resistor R3 and the source of MOSFET Q1. Resistors R3 and R4 are connected in series to ground, and the series junction of resistors R3 and R4 is connected to the gate of MOSFET Q1. The other end of resistor R1 is connected to the gate of MOSFET Q2 and one end of resistor R2. The other end of resistor R2 is grounded. The anode of diode D2 is connected to the energy storage battery, the cathode of diode D2 is connected to the drain of MOSFET Q2, and the source of MOSFET Q2 is connected to the source of MOSFET Q1.

2. The intelligent converged terminal dual-mode power supply switching power supply device according to claim 1, characterized in that, The main power supply module is connected to the power grid transmission line for power.

3. The intelligent fusion terminal dual-mode power switching device according to claim 1, characterized in that, The supercapacitor C1 has a specification of 5.5V 1.5F.

4. The intelligent converged terminal dual-mode power supply switching power supply device according to claim 1, wherein, A diode D3-D4 is also provided between the power supply switching circuit and the power supply driving circuit. The output terminal of the power supply switching circuit is connected to the anode of diode D3, the cathode of diode D3 is connected to the supercapacitor C1 and the anode of diode D4 respectively, and the cathode of diode D4 is connected to the power supply driving circuit.

5. The intelligent converged terminal dual-mode power supply switching power supply device according to claim 1, wherein, It also includes a battery management system, which is electrically connected to the energy storage battery.

6. The intelligent converged terminal dual-mode power supply switching power supply device according to claim 5, wherein, The battery management system is capable of wireless communication with a remote cloud terminal.

7. The intelligent converged terminal dual-mode power supply switching power supply device of claim 1, wherein, The energy storage battery is a replaceable rechargeable lithium battery.

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