Wireless charging module of overhead fault sensing terminal

Abstract

The utility model discloses a wireless charging module of an overhead fault sensing terminal, which belongs to the field of wireless charging and is characterized in that a wireless charging transmitting module at the bottom end is used for generating power, a wireless charging receiving module in the terminal is used for charging, and a power supply guarantee is provided for equipment as a supplement of CT (Computed Tomography) electricity taking and solar energy electricity taking; the problems that an overhead fault sensing terminal is long in charging distance and small in charging power are solved. The wireless charging device mainly comprises a wireless charging transmitting module and a wireless charging receiving module, the wireless charging transmitting module is connected with a solar power taking module and an alternating current power taking module, the wireless charging receiving module is connected with a fault sensing terminal, and the wireless charging transmitting module comprises a wireless charging transmitting chip U2. And a filter capacitor C4 is connected between the BS1 pin and the OUT1 pin of the wireless charging transmitting chip U2. The wireless charging device is mainly used for wireless charging of the overhead fault sensing terminal.

Description

Technical Field

[0001] The utility model relates to the field of wireless charging, and in particular to a wireless charging module of an overhead fault sensing terminal. Background Art

[0002] Distribution lines operate in a poor environment and have a high failure rate, often causing power outages due to uncontrollable factors such as lightning strikes and insulation damage. Overhead fault sensing terminals can accurately locate the fault section and the location of the fault signal, effectively solving distribution network fault location problems. However, distribution network terminals often have few users and low supply currents, making the CT power supply insufficient for normal equipment operation. Due to the small size of the equipment, they can only use small solar panels, and the power generated is insufficient for normal operation.

[0003] For example, the wireless charging module, wireless charging table and wireless charging method with announcement number CN110867931B, the existing commonly used long-distance wireless charging technology is mainly used to charge mobile phones and some smart devices. The charging distance is short and the charging power is large. Utility Model Content

[0004] The purpose of this utility model is to provide a wireless charging module for an overhead fault sensing terminal, which generates electricity through a wireless charging transmitter module at the bottom and charges using a wireless charging receiver module in the terminal, providing power supply guarantee for the equipment as a supplement to CT power and solar power. It solves the problems of long charging distance and low charging power of overhead fault sensing terminals.

[0005] The utility model is realized through the following technical solutions:

[0006] A wireless charging module for an overhead fault sensing terminal includes a wireless charging transmitter module and a wireless charging receiver module. The wireless charging transmitter module is respectively connected to a solar power collection module and an AC power collection module, and the wireless charging receiver module is connected to the fault sensing terminal. The wireless charging transmitter module includes a wireless charging transmitter chip U2, a filter capacitor C4 is connected between the BS1 pin and the OUT1 pin of the wireless charging transmitter chip U2, a filter capacitor C10 is connected between the BS2 pin and the OUT2 pin of the wireless charging transmitter chip U2, an LC resonant circuit 1 is connected between the OUT1 pin and the OUT2 pin of the wireless charging transmitter chip U2, a VDD pin of the wireless charging transmitter chip U2 is respectively connected to a filter capacitor C13 and a filter capacitor C12, the filter capacitor C13 is connected to the LC resonant circuit 1, the filter capacitor C12 is grounded, and two PWM pins of the wireless charging transmitter chip U2 are connected to the PWM signal adjustment output pin of the microcontroller.

[0007] Furthermore, the LC resonant circuit 1 includes an inductor L1 and a resonant capacitor group, the inductor L1 is connected in series with the resonant capacitor group, and the two ends of the LC resonant circuit 1 are respectively connected to the filter capacitor C3 and the filter capacitor C11, the filter capacitor C3 is also connected to the OUT1 pin of the wireless charging transmitter chip U2, and the filter capacitor C11 is also connected to the OUT2 pin of the wireless charging transmitter chip U2.

[0008] Furthermore, the resonant capacitor group includes a resonant capacitor C6, a resonant capacitor C7, a resonant capacitor C8 and a resonant capacitor C9, which are connected in parallel and then in series with the inductor L1.

[0009] Furthermore, the wireless charging receiving module includes a wireless charging receiving chip U3, the IN pin of the wireless charging receiving chip U3 is connected to the LC resonant circuit 2, and the VA pin of the wireless charging receiving chip U3 is respectively connected to the current limiting resistor R12 and the current limiting resistor R13, and a filter capacitor C17 is also connected in parallel at both ends of the current limiting resistor R12 and the current limiting resistor R13.

[0010] Furthermore, the second LC resonant circuit includes an inductor L2, a filter capacitor C15, and a filter capacitor C16 connected in parallel, and an anti-backflow diode D3 is connected between the filter capacitor C15 and the filter capacitor C16.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. Generate electricity through the wireless charging transmitter module at the bottom, and charge it through the wireless charging receiver module in the terminal, which serves as a supplement to CT power and solar power to provide power supply guarantee for the equipment.

[0013] 2. Solved the problem of long charging distance and low charging power of overhead fault sensing terminals. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural principle diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the wireless charging transmitter module of the present utility model;

[0016] Figure 3 This is a schematic diagram of the wireless charging receiving module of the present invention. DETAILED DESCRIPTION

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Example 1

[0019] like Figure 1 – Figure 2As shown, a wireless charging module of an overhead fault sensing terminal includes a wireless charging transmitter module and a wireless charging receiver module. The wireless charging transmitter module is respectively connected to a solar power collection module and an AC power collection module, and the wireless charging receiver module is connected to the fault sensing terminal. The wireless charging transmitter module includes a wireless charging transmitter chip U2, a filter capacitor C4 is connected between the BS1 pin and the OUT1 pin of the wireless charging transmitter chip U2, a filter capacitor C10 is connected between the BS2 pin and the OUT2 pin of the wireless charging transmitter chip U2, an LC resonant circuit 1 is connected between the OUT1 pin and the OUT2 pin of the wireless charging transmitter chip U2, a VDD pin of the wireless charging transmitter chip U2 is respectively connected to a filter capacitor C13 and a filter capacitor C12, the filter capacitor C13 is connected to the LC resonant circuit 1, the filter capacitor C12 is grounded, and two PWM pins of the wireless charging transmitter chip U2 are connected to the PWM signal adjustment output pin of the single-chip microcomputer; the wireless charging transmitter chip U2 adopts a PN7726 chip, and the single-chip microcomputer adopts an STM32 chip. The PN7726 is an intelligent power chip for wireless charging. It features a built-in bootstrap high-voltage PMOS (PMOS), a 5V, 50mA LDO, and undervoltage, overtemperature, and output short-circuit protection. The STM32 chip outputs a PWM signal to regulate the PN7726's output power, adjusting the PN7266's transmit power as needed.

[0020] The wireless charging transmitter converts electrical energy into microwave signals and transmits them by aligning the antenna in the direction of the fault sensing terminal. The wireless charging receiver module in the fault sensing terminal senses the microwave signals through the antenna and converts them into electrical signals using the PN7726 chip, which is then used to charge the fault sensing terminal's battery.

[0021] Example 2

[0022] like Figure 3As shown, a wireless charging module for an overhead fault sensing terminal, the LC resonant circuit one includes an inductor L1 and a resonant capacitor group, the inductor L1 is connected in series with the resonant capacitor group, the two ends of the LC resonant circuit one are respectively connected to the filter capacitor C3 and the filter capacitor C11, the filter capacitor C3 is also connected to the OUT1 pin of the wireless charging transmitter chip U2, and the filter capacitor C11 is also connected to the OUT2 pin of the wireless charging transmitter chip U2; the resonant capacitor group includes a resonant capacitor C6, a resonant capacitor C7, a resonant capacitor C8 and a resonant capacitor C9, and the resonant capacitors C6, C7, C8 and C9 are connected in parallel with the inductor L 1 in series; the wireless charging receiving module includes a wireless charging receiving chip U3, the IN pin of the wireless charging receiving chip U3 is connected to the second LC resonant circuit, and the VA pin of the wireless charging receiving chip U3 is respectively connected to the current limiting resistor R12 and the current limiting resistor R13, and the two ends of the current limiting resistor R12 and the current limiting resistor R13 are also connected in parallel with the filter capacitor C17; the second LC resonant circuit includes an inductor L2, a filter capacitor C15 and a filter capacitor C16 connected in parallel, and an anti-backflow diode D3 is connected between the filter capacitors C15 and C16. The wireless charging receiving chip U3 uses the T3168 chip, and the rest is the same as in Example 1. The T3168 chip is used in the wireless charging receiving circuit, converting microwave signals into electrical signals for device charging, and output voltage sampling is used to change the output voltage regulation.

[0023] Inductor L2, filter capacitors C15, and filter capacitors C16 form the microwave signal receiving section, which is used to input the T3168 chip. Current-limiting resistors R12 and R13, along with filter capacitor C17, form the output circuit for current limiting and filtering.

[0024] The wireless charging transmitter module draws power from solar energy or mains electricity, which is then supplied via the wireless module. This power is then supplied by the wireless power module located in the fault sensing terminal, supplementing the fault sensing terminal's operation and compensating for the lower power consumption of the CT and solar power sources. The remaining unexplained portions represent existing technology and are not elaborated upon.

Claims

1. A wireless charging module for an overhead fault sensing terminal, comprising a wireless charging transmitter module and a wireless charging receiver module, wherein the wireless charging transmitter module is connected to a solar power supply module and an AC power supply module, respectively, and the wireless charging receiver module is connected to the fault sensing terminal, characterized in that: The wireless charging transmitter module includes a wireless charging transmitter chip U2, a filter capacitor C4 is connected between the BS1 pin and the OUT1 pin of the wireless charging transmitter chip U2, a filter capacitor C10 is connected between the BS2 pin and the OUT2 pin of the wireless charging transmitter chip U2, an LC resonant circuit 1 is connected between the OUT1 pin and the OUT2 pin of the wireless charging transmitter chip U2, the VDD pin of the wireless charging transmitter chip U2 is respectively connected to the filter capacitor C13 and the filter capacitor C12, the filter capacitor C13 is connected to the LC resonant circuit 1, the filter capacitor C12 is grounded, and the PWM pin of the wireless charging transmitter chip U2 is connected to the PWM signal adjustment output pin of the microcontroller.

2. The wireless charging module of the overhead fault sensing terminal according to claim 1, characterized in that: The LC resonant circuit 1 includes an inductor L1 and a resonant capacitor group. The inductor L1 is connected in series with the resonant capacitor group. The two ends of the LC resonant circuit 1 are respectively connected to the filter capacitor C3 and the filter capacitor C11. The filter capacitor C3 is also connected to the OUT1 pin of the wireless charging transmitter chip U2, and the filter capacitor C11 is also connected to the OUT2 pin of the wireless charging transmitter chip U2.

3. The wireless charging module of the overhead fault sensing terminal according to claim 2, characterized in that: The resonant capacitor group includes a resonant capacitor C6, a resonant capacitor C7, a resonant capacitor C8 and a resonant capacitor C9. The resonant capacitors C6, C7, C8 and C9 are connected in parallel and then in series with the inductor L1.

4. The wireless charging module for an overhead fault sensing terminal according to claim 1, characterized in that: The wireless charging receiving module includes a wireless charging receiving chip U3, the IN pin of the wireless charging receiving chip U3 is connected to the LC resonant circuit 2, and the VA pin of the wireless charging receiving chip U3 is respectively connected to the current limiting resistor R12 and the current limiting resistor R13, and a filter capacitor C17 is also connected in parallel at both ends of the current limiting resistor R12 and the current limiting resistor R13.

5. The wireless charging module of the overhead fault sensing terminal according to claim 1, characterized in that: The second LC resonant circuit includes an inductor L2, a filter capacitor C15 and a filter capacitor C16 connected in parallel, and an anti-backflow diode D3 is connected between the filter capacitor C15 and the filter capacitor C16.

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