CN-224233397-U - Charging seat circuit and charging seat

CN224233397UCN 224233397 UCN224233397 UCN 224233397UCN-224233397-U

Abstract

The utility model discloses a charging seat circuit and a charging seat, and relates to the technical field of charging equipment. The charging seat circuit comprises a power supply input end, a wireless charging circuit, a fan driving circuit, a placement detection circuit and a main control circuit. The placement detection circuit can detect the placement condition of the electric toothbrush on the charging seat and output a corresponding placement detection signal. When the main control circuit detects that the electric toothbrush is placed on the charging seat according to the placement detection signal, the wireless charging circuit and/or the fan driving circuit are controlled to work. The wireless charging circuit can convert the power supply into wireless charging signals for output so as to charge the electric toothbrush. The fan driving circuit can drive the fan to rotate so as to drive the airflow to act on the bristles of the electric toothbrush head and air-dry the bristles. Therefore, the electric toothbrush can be wirelessly charged and simultaneously provide an air drying function, and moisture can be effectively prevented from accumulating on the surface of the toothbrush for a long time, so that bacteria are prevented from breeding.

Inventors

CHEN CHUGANG
ZHANG HONGLEI
LI DONGBAO
ZHENG CHUANZHOU

Assignees

深圳瑞圣特电子科技有限公司

Dates

Publication Date: 20260512
Application Date: 20250528

Claims (10)

1. A charging dock circuit, wherein the charging dock comprises a fan, the charging dock circuit comprising: the power supply input end is used for inputting a power supply; The input end of the wireless charging circuit is connected with the power supply input end, the output end of the wireless charging circuit is used for being in wireless connection with the charging signal receiving end of the electric toothbrush, and the wireless charging circuit is used for converting the power supply into wireless charging signals for output so as to charge the electric toothbrush; The power end of the fan driving circuit is connected with the power supply input end, the driving end of the fan driving circuit is connected with the fan, and the fan driving circuit is used for driving the fan to rotate; The power end of the placement detection circuit is connected with the power supply input end, and the placement detection circuit is used for detecting the placement condition of the electric toothbrush on the charging seat and outputting a corresponding placement detection signal; The main control circuit is respectively connected with the power supply input end, the controlled end of the wireless charging circuit, the controlled end of the fan driving circuit and the signal output end of the placement detection circuit, and is used for controlling the wireless charging circuit and/or the fan driving circuit to work when the placement detection signal detects that the electric toothbrush is placed on the charging seat.
2. The cradle circuit of claim 1, wherein the placement detection circuit comprises: The power end of the pressure detection circuit is connected with the power supply input end, the signal output end of the pressure detection circuit is connected with the main control circuit, and the pressure detection circuit is used for detecting pressure change on the charging seat and outputting a corresponding pressure detection signal; The main control circuit is used for controlling the wireless charging circuit and/or the fan driving circuit to work when the electric toothbrush is detected to be placed on the charging seat according to the pressure detection signal.
3. The cradle circuit of claim 2, wherein the pressure detection circuit comprises a first pressure sensing resistor, a second pressure sensing resistor, a third pressure sensing resistor, and a fourth pressure sensing resistor; The pressure detection circuit comprises a first power end, a first voltage sensing resistor, a first output end, a second voltage sensing resistor, a fourth voltage sensing resistor, a grounding end, a third voltage sensing resistor and a second output end, wherein the first power end of the pressure detection circuit and one end of the first voltage sensing resistor are connected with one end of the second voltage sensing resistor, the other end of the first voltage sensing resistor and one end of the fourth voltage sensing resistor are connected, the grounding end of the pressure detection circuit and the other end of the fourth voltage sensing resistor are connected with one end of the third voltage sensing resistor, and the second output end of the pressure detection circuit and the other end of the third voltage sensing resistor are connected with the other end of the first voltage sensing resistor.
4. The charging stand circuit of claim 1, wherein the fan driving circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor, a second capacitor, a third capacitor, a first switching tube and a first diode; The fan driving circuit comprises a first resistor, a second resistor, a third resistor, a first switch tube, a second switch tube, a first resistor, a second resistor, a third resistor, a fourth resistor, a first signal output end of the main control circuit, a second end of the first switch tube, a positive electrode of the first diode, a first end of the third resistor, a second end of the first switch tube, a negative electrode of the first diode, a first end of the third resistor, a second end of the fan, a second end of the third capacitor, a negative electrode of the first diode, a power input end of the fan driving circuit, a first feedback signal input end of the main control circuit, a second end of the first resistor, a first end of the second resistor, a second end of the second resistor, a positive electrode of the first diode, a first end of the third resistor, a first end of the first switch tube, a second end of the second fan, a second end of the third capacitor, a negative electrode of the first diode, and a power input end of the fan driving circuit.
5. The charging stand circuit of claim 4, wherein the first switching tube is an NMOS tube, a gate of the NMOS tube is a controlled end of the first switching tube, a source of the NMOS tube is a first end of the first switching tube, and a drain of the NMOS tube is a second end of the first switching tube.
6. The cradle circuit of claim 1, wherein the wireless charging circuit comprises an operational amplifier, a second switching tube, a fifth resistor, a sixth resistor, a seventh resistor, a fourth capacitor, a fifth capacitor, and a first inductor; The controlled end of the second switching tube is connected with the second signal output end of the main control circuit, the first end of the second switching tube and one end of the fourth capacitor are connected with one end of the first inductor, the other end of the fourth capacitor and the other end of the first inductor are connected with the power input end of the wireless charging circuit, the second end of the second switching tube and one end of the fifth resistor are connected with the first input end of the operational amplifier, the other end of the fifth resistor is grounded, the second input end of the operational amplifier, one end of the sixth resistor and one end of the seventh resistor are connected with one end of the fifth capacitor, the other end of the sixth resistor is grounded, and the other end of the seventh resistor, the other end of the fifth capacitor and the output end of the operational amplifier are connected with the second feedback signal input end of the main control circuit.
7. The cradle circuit of claim 6, wherein the wireless charging circuit further comprises an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, and a sixth capacitor; One end of the eighth resistor is connected with the second signal output end of the main control circuit, the other end of the eighth resistor and one end of the ninth resistor are connected with the controlled end of the second switching tube, one end of the tenth resistor and the second end of the second switching tube are connected with one end of the fifth resistor, the other end of the tenth resistor and one end of the sixth capacitor are connected with the first input end of the operational amplifier, the other end of the sixth capacitor is grounded, one end of the eleventh resistor is connected with the output end of the operational amplifier, and the other end of the eleventh resistor is connected with the second feedback signal input end of the main control circuit.
8. The cradle circuit of claim 1, further comprising: The input end of the voltage stabilizing circuit is connected with the power supply input end, the output end of the voltage stabilizing circuit is connected with the main control circuit, and the voltage stabilizing circuit is used for stabilizing the voltage of the power supply and then outputting the voltage.
9. The charging stand circuit of claim 8, wherein the voltage stabilizing circuit comprises a seventh capacitor, an eighth capacitor, a second inductor, a third inductor and a voltage stabilizing chip; One end of the seventh capacitor and one end of the second inductor are connected with the first input end of the voltage stabilizing circuit, the other end of the seventh capacitor and one end of the third inductor are connected with the second input end of the voltage stabilizing circuit, one end of the eighth capacitor and the other end of the second inductor are connected with the input end of the voltage stabilizing chip, the other end of the third inductor and the other end of the eighth capacitor are grounded with the grounding end of the voltage stabilizing chip, and the output end of the voltage stabilizing chip is the output end of the voltage stabilizing circuit.
10. A charging stand comprising a fan and a charging stand circuit according to any one of claims 1 to 9, wherein the fan is connected to the drive end of the fan drive circuit.

Description

Charging seat circuit and charging seat Technical Field The present utility model relates to charging devices, and particularly to a charging stand circuit and a charging stand. Background With the improvement of living standard of people, more and more users select electric toothbrushes to replace traditional toothbrushes so as to improve the cleaning effect of the oral cavity. The electric toothbrush can provide a more efficient cleaning mode, helps a user to effectively remove dental plaque, and achieves a better oral care effect. Existing powered toothbrushes are typically charged using a charging base upon which a user places the toothbrush after it is used. At this time, moisture often remains on the surface of the toothbrush. If no timely air drying measures are taken, water accumulates on the surface of the toothbrush for a long time, bacteria are easy to grow, the oral hygiene is affected, and the service life of the toothbrush is reduced. Disclosure of utility model The utility model mainly aims to provide a charging seat circuit, which aims to solve the problem that an existing electric toothbrush charging seat can not timely air-dry a used toothbrush when charging an electric toothbrush. To achieve the above object, the present utility model proposes a charging stand circuit including a fan, the charging stand circuit including: the power supply input end is used for inputting a power supply; The input end of the wireless charging circuit is connected with the power supply input end, the output end of the wireless charging circuit is used for being in wireless connection with the charging signal receiving end of the electric toothbrush, and the wireless charging circuit is used for converting the power supply into wireless charging signals for output so as to charge the electric toothbrush; The power end of the fan driving circuit is connected with the power supply input end, the driving end of the fan driving circuit is connected with the fan, and the fan driving circuit is used for driving the fan to rotate; The power end of the placement detection circuit is connected with the power supply input end, and the placement detection circuit is used for detecting the placement condition of the electric toothbrush on the charging seat and outputting a corresponding placement detection signal; The main control circuit is respectively connected with the power supply input end, the controlled end of the wireless charging circuit, the controlled end of the fan driving circuit and the signal output end of the placement detection circuit, and is used for controlling the wireless charging circuit and/or the fan driving circuit to work when the placement detection signal detects that the electric toothbrush is placed on the charging seat. In one embodiment, the placement detection circuit includes: The power end of the pressure detection circuit is connected with the power supply input end, the signal output end of the pressure detection circuit is connected with the main control circuit, and the pressure detection circuit is used for detecting pressure change on the charging seat and outputting a corresponding pressure detection signal; The main control circuit is used for controlling the wireless charging circuit and/or the fan driving circuit to work when the electric toothbrush is detected to be placed on the charging seat according to the pressure detection signal. In one embodiment, the pressure detection circuit includes a first pressure sensing resistor, a second pressure sensing resistor, a third pressure sensing resistor, and a fourth pressure sensing resistor; The pressure detection circuit comprises a first power end, a first voltage sensing resistor, a first output end, a second voltage sensing resistor, a fourth voltage sensing resistor, a grounding end, a third voltage sensing resistor and a second output end, wherein the first power end of the pressure detection circuit and one end of the first voltage sensing resistor are connected with one end of the second voltage sensing resistor, the other end of the first voltage sensing resistor and one end of the fourth voltage sensing resistor are connected, the grounding end of the pressure detection circuit and the other end of the fourth voltage sensing resistor are connected with one end of the third voltage sensing resistor, and the second output end of the pressure detection circuit and the other end of the third voltage sensing resistor are connected with the other end of the first voltage sensing resistor. In an embodiment, the fan driving circuit includes a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor, a second capacitor, a third capacitor, a first switch tube and a first diode; The fan driving circuit comprises a first resistor, a second resistor, a third resistor, a first switch tube, a second switch tube, a first resistor, a second resistor, a third resistor, a fourth resistor, a first signal