CN210404812U

CN210404812U - Charging circuit of single live wire switch

Info

Publication number: CN210404812U
Application number: CN201921405409.6U
Authority: CN
Inventors: 张振达; 张民; 毛祖宾
Original assignee: Guangdong Ake Technology Co ltd
Current assignee: Guangdong Ake Technology Co ltd
Priority date: 2019-08-27
Filing date: 2019-08-27
Publication date: 2020-04-24
Anticipated expiration: 2029-08-27

Abstract

The utility model discloses a charging circuit of single live wire switch, include: the device comprises an XD-KC024 single live wire relay driving module and a voltage reduction circuit, wherein the XD-KC024 single live wire relay driving module is used for extracting voltage from a live wire and outputting 8.5-14.5V voltage, and the voltage reduction circuit is used for converting the voltage value output by the XD-KC024 single live wire relay driving module into charging voltage. The charging circuit formed by the XD-KC024 single live wire relay driving module and the voltage reduction circuit overcomes the defect that the dry battery needs to be frequently replaced because the existing single live wire switch has no charging circuit, and solves the embarrassment in the industry. The utility model discloses mainly used switch technical field.

Description

Charging circuit of single live wire switch

Technical Field

The utility model relates to a switch art field, in particular to charging circuit of single live wire switch.

Background

The existing single live wire switch (only a single live wire enters/exits without a zero line) becomes a replacement finished product of the traditional mechanical switch, so that the intelligent control of the lighting equipment is realized. However, the control module is required to be provided for realizing intelligent control, the control module needs to be externally connected for power supply, the control module is powered by a dry battery in the conventional power supply mode, and then the low power consumption of the control module is kept so as to prolong the power supply time. However, the way of supplying power from dry cells continues for a long time, requiring frequent replacement of the dry cells. Therefore, a solution is needed to address this situation.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a charging circuit of single live wire switch to solve the current embarrassment that needs frequently to change the dry battery.

The utility model provides a solution of its technical problem is: a charging circuit for a single hot wire switch, comprising: the device comprises an XD-KC024 single live wire relay driving module and a voltage reduction circuit, wherein the XD-KC024 single live wire relay driving module is used for extracting voltage from a live wire and outputting 8.5-14.5V voltage, and the voltage reduction circuit is used for converting the voltage value output by the XD-KC024 single live wire relay driving module into charging voltage.

Further, the step-down circuit includes: the voltage value output by the XD-KC024 single live wire relay driving module is reduced to a floating voltage, and the constant voltage circuit is used for outputting the floating voltage to a charging voltage constantly.

Further, the one-stage voltage-reducing circuit includes: the voltage-reducing converter is of the model TPS62120, the voltage detector is of the model ME2808, the first resistor, the second resistor, the third resistor, the first capacitor, the second capacitor, the third capacitor, the first inductor and the floating voltage node, an IN end of the voltage-reducing converter is respectively connected with an anode of the third capacitor, one end of the first resistor, an output end of the XD-KC024 single live wire relay driving module and a VCC end of the voltage detector, an EN end of the voltage-reducing converter is respectively connected with the other end of the first resistor, one end of the first capacitor and a RESET end of the voltage detector, an SW end of the voltage-reducing converter is connected with one end of the first inductor, the other end of the first inductor is respectively connected with one end of the second capacitor, one end of the second resistor, a VOUT end of the voltage-reducing converter and the floating voltage node, the other end of the second resistor is respectively connected with an FB end of the voltage-reducing converter and one end of, the GND end of the voltage detector, the other end of the first capacitor, the GND end of the buck converter, the other end of the third resistor, the other end of the second capacitor and the cathode of the third capacitor are all connected to the ground.

Further, the constant voltage circuit includes: a constant voltage chip with the model number ME4067, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a fourth capacitor, a fifth capacitor and a sixth capacitor, the VCC end of the constant voltage chip is respectively connected with one end of the fourth capacitor, one end of the fifth capacitor and the floating voltage node, the CE end of the constant voltage chip is connected with one end of the fourth resistor, the TEMP end of the constant voltage chip is connected with one end of the fifth resistor, the BAT end of the constant voltage chip is respectively connected with one end of the sixth capacitor and one end of the seventh resistor, the IRS end of the constant voltage chip is connected with one end of the sixth resistor, the other end of the fourth capacitor, the other end of the fifth capacitor, the other end of the fourth resistor, the other end of the fifth resistor, the GND end of the constant voltage chip, the other end of the sixth resistor and the other end of the sixth capacitor are all connected to the ground, and the other end of the seventh resistor outputs charging voltage.

Further, the first-stage voltage reduction circuit further comprises: and the cathode of the voltage stabilizing diode is connected with the anode of the third capacitor, and the anode of the voltage stabilizing diode is connected with the cathode of the third capacitor.

Further, the first-stage voltage reduction circuit further comprises: and the cathode of the Schottky diode is connected with the SW end of the buck converter, and the anode of the Schottky diode is connected to the ground.

The utility model has the advantages that: the charging circuit formed by the XD-KC024 single live wire relay driving module and the voltage reduction circuit overcomes the defect that the dry battery needs to be frequently replaced because the existing single live wire switch has no charging circuit, and solves the embarrassment in the industry.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from these figures without inventive effort.

FIG. 1 is a block diagram of a charging circuit;

FIG. 2 is a schematic circuit diagram of a one-stage buck circuit;

fig. 3 is a circuit connection diagram of the constant voltage circuit.

Detailed Description

The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention. In addition, all the coupling/connection relationships mentioned herein do not mean that the components are directly connected, but mean that a better coupling structure can be formed by adding or reducing coupling accessories according to specific implementation conditions. All technical characteristics in the invention can be interactively combined on the premise of not conflicting with each other.

Embodiment 1, referring to fig. 1, a charging circuit of a single live wire switch includes: the voltage-reducing circuit comprises an XD-KC024 single live wire relay driving module 100 and a voltage-reducing circuit 200, wherein the XD-KC024 single live wire relay driving module 100 is used for extracting voltage from live wires and outputting 8.5-14.5V voltage, and the voltage-reducing circuit 200 is used for converting the voltage value output by the XD-KC024 single live wire relay driving module 100 into charging voltage. Wherein the charging voltage is applied to the secondary battery 300, thereby completing the charging of the secondary battery 300. The defect that the existing single-live-wire switch is not provided with a charging circuit and a dry battery needs to be frequently replaced is overcome, and the embarrassment in the industry is solved.

As an optimized implementation manner, the voltage dropping circuit 200 adopts a scheme that a first-stage voltage dropping circuit and a constant voltage circuit are matched, wherein the first-stage voltage dropping circuit is used for dropping the voltage output by the XD-KC024 single-live-wire relay driving module 100 to a floating voltage, and the constant voltage circuit is used for outputting the floating voltage to a charging voltage constantly. Such a scheme can overcome the situation that charging is not ideal due to unstable load of the single live wire switch. Specifically, since the output voltage of the XD-KC024 single-hot-wire relay driving module 100 is greatly affected by the load of the single-hot-wire switch, the output voltage of the XD-KC024 single-hot-wire relay driving module 100 has a certain fluctuation, and if the fluctuation directly acts on the storage battery 300, the storage battery 300 is damaged, and the charging efficiency is reduced. Therefore, in the preferred embodiment, the output voltage of the XD-KC024 single-hot-wire relay driving module 100 is converted into a floating voltage by the first-stage voltage reduction circuit, the floating voltage is made constant by the constant voltage circuit and a charging voltage is output, and the battery 300 is charged by the constant voltage charging, thereby improving the charging efficiency.

With reference to fig. 2, the first-stage voltage-reducing circuit includes: the primary buck circuit takes a buck converter U1 with the model of TPS62120 as a core, an IN end of the buck converter U1 is respectively connected with an anode of a third capacitor C3, one end of a first resistor R1, an output end of an XD-KC024 single-live wire relay driving module 100 +12V and a VCC end of a voltage detector U2, an EN end of the buck converter U1 is respectively connected with the other end of a first resistor R1, one end of a first capacitor C1 and a RESET end of the voltage detector U2, an SW end of the buck converter U1 is connected with one end of a first inductor L1, the other end of the first inductor U2 is connected with one end of a second inductor R1, one end of a first capacitor C3, a first inductor L1 and a floating voltage node +5VNB, an SW end of the buck converter U1 with the model of the TPS62120 is connected with the output end of the first buck converter U1, an EN end of the buck converter U1 is respectively connected with the other end of the first inductor L1, and the other end of the second inductor R6342 and the second, The VOUT terminal of the buck converter U1 and the floating voltage node +5VNB are connected, the other end of the second resistor R2 is connected to the FB terminal of the buck converter U1 and the one end of the third resistor R3, respectively, and the GND terminal of the voltage detector U2, the other end of the first capacitor C1, the GND terminal of the buck converter U1, the other end of the third resistor R3, the other end of the second capacitor C2, and the cathode of the third capacitor C3 are all connected to ground. The above circuit configuration constitutes a basic peripheral circuit of the buck converter U1, so that the buck converter U1 can perform buck conversion on the output voltage of the XD-KC024 single-hot-wire relay driving module 100.

Referring to fig. 3, the constant voltage circuit includes: the constant voltage circuit is characterized in that a constant voltage chip U3 with the model number ME4067, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, a fourth capacitor C4, a fifth capacitor C5 and a sixth capacitor C6 are arranged, a VCC end of the constant voltage chip U3 is respectively connected with one end of the fourth capacitor C4, one end of the fifth capacitor C5 and a floating voltage node +5VNB, the constant voltage circuit takes the constant voltage chip U3 with the model number ME4067 as a core, a CE end of the constant voltage chip U3 is connected with one end of the fourth resistor R4, a TEMP end of the constant voltage chip U3 is connected with one end of the fifth resistor R5, a BAT end of the constant voltage chip U3 is respectively connected with one end of the sixth capacitor C6 and one end of the seventh resistor R7, an IRS end of the constant voltage chip U3 is connected with one end of the sixth resistor R6, and the other end of the fourth capacitor C4, the other end of the fifth capacitor C4 and the constant voltage chip R4 and the other end of the constant voltage resistor R4, The other end of the sixth resistor R6 and the other end of the sixth capacitor C6 are both connected to ground, the other end of the seventh resistor R7 is connected to the positive electrode of the battery 300, and the other end of the seventh resistor R7 outputs a charging voltage. The above-described circuit configuration constitutes a basic operation circuit of the constant voltage chip U3, so that the constant voltage chip U3 can output a constant charging voltage.

In some preferred embodiments, the one-stage voltage-reducing circuit further includes: and the cathode of the voltage stabilizing diode D1 is connected with the anode of the third capacitor C3, and the anode of the voltage stabilizing diode D1 is connected with the cathode of the third capacitor C3. The output voltage of the XD-KC024 single live wire relay drive module 100 can be stabilized by the voltage stabilizing diode D1.

In some preferred embodiments, the one-stage voltage-reducing circuit further includes: a Schottky diode D2, the cathode of the Schottky diode D2 is connected with the SW terminal of the buck converter U1, and the anode of the Schottky diode D2 is connected to the ground. The surge generated by the first inductor L1 can be absorbed by the schottky diode D2, and the SW terminal of the buck converter U1 is protected.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the details of the embodiments shown, but is capable of various modifications and changes without departing from the spirit of the invention.

Claims

1. A charging circuit for a single live wire switch, comprising: the device comprises an XD-KC024 single live wire relay driving module and a voltage reduction circuit, wherein the XD-KC024 single live wire relay driving module is used for extracting voltage from a live wire and outputting 8.5-14.5V voltage, and the voltage reduction circuit is used for converting the voltage value output by the XD-KC024 single live wire relay driving module into charging voltage.

2. The charging circuit of claim 1, wherein the voltage-reducing circuit comprises: the voltage value output by the XD-KC024 single live wire relay driving module is reduced to a floating voltage, and the constant voltage circuit is used for outputting the floating voltage to a charging voltage constantly.

3. The charging circuit of claim 2, wherein the primary voltage reduction circuit comprises: the voltage-reducing converter is of the model TPS62120, the voltage detector is of the model ME2808, the first resistor, the second resistor, the third resistor, the first capacitor, the second capacitor, the third capacitor, the first inductor and the floating voltage node, an IN end of the voltage-reducing converter is respectively connected with an anode of the third capacitor, one end of the first resistor, an output end of the XD-KC024 single live wire relay driving module and a VCC end of the voltage detector, an EN end of the voltage-reducing converter is respectively connected with the other end of the first resistor, one end of the first capacitor and a RESET end of the voltage detector, an SW end of the voltage-reducing converter is connected with one end of the first inductor, the other end of the first inductor is respectively connected with one end of the second capacitor, one end of the second resistor, a VOUT end of the voltage-reducing converter and the floating voltage node, the other end of the second resistor is respectively connected with an FB end of the voltage-reducing converter and one end of, the GND end of the voltage detector, the other end of the first capacitor, the GND end of the buck converter, the other end of the third resistor, the other end of the second capacitor and the cathode of the third capacitor are all connected to the ground.

4. The charging circuit of claim 3, wherein the constant voltage circuit comprises: a constant voltage chip with the model number ME4067, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a fourth capacitor, a fifth capacitor and a sixth capacitor, the VCC end of the constant voltage chip is respectively connected with one end of the fourth capacitor, one end of the fifth capacitor and the floating voltage node, the CE end of the constant voltage chip is connected with one end of the fourth resistor, the TEMP end of the constant voltage chip is connected with one end of the fifth resistor, the BAT end of the constant voltage chip is respectively connected with one end of the sixth capacitor and one end of the seventh resistor, the IRS end of the constant voltage chip is connected with one end of the sixth resistor, the other end of the fourth capacitor, the other end of the fifth capacitor, the other end of the fourth resistor, the other end of the fifth resistor, the GND end of the constant voltage chip, the other end of the sixth resistor and the other end of the sixth capacitor are all connected to the ground, and the other end of the seventh resistor outputs charging voltage.

5. The charging circuit of claim 3, wherein the primary voltage-dropping circuit further comprises: and the cathode of the voltage stabilizing diode is connected with the anode of the third capacitor, and the anode of the voltage stabilizing diode is connected with the cathode of the third capacitor.

6. The charging circuit of claim 3, wherein the primary voltage-dropping circuit further comprises: and the cathode of the Schottky diode is connected with the SW end of the buck converter, and the anode of the Schottky diode is connected to the ground.