Wireless charging toothbrush with inductive charging

Abstract

The application is a divisional application of application No. 2022103915384, and relates to the technical field of electric toothbrushes, in particular to an inductive charging type wireless charging toothbrush, which comprises a charging base, an electric toothbrush, and a charging device arranged between the electric toothbrush and the charging base, wherein the charging device charges a toothbrush battery by taking the charging base battery as a power supply; a capacitance induction module is used for sensing the position where a human body touches the toothbrush shell to output a corresponding signal, and a toothbrush controller adjusts the power of a motor device according to the signal output by the capacitance induction module. The inductive charging type wireless charging toothbrush can be charged by the charging base without external power supply support, can break away from the limitation that the charging base needs to be connected to a power supply, and realizes true wireless charging. By adopting the capacitance induction module to control the motor device, the electric toothbrush of the application is better in water seepage prevention and better in user experience.

Description

[0001] This application is a divisional application. The original application has the application number 2022103915384, the application date is April 14, 2022, and the invention title is "Portable Rechargeable Toothbrush Controlled by Capacitive Sensing". [Technical Field] This invention relates to the field of electric toothbrush technology, and more specifically to an inductively charged wireless toothbrush. [Background Technology] Electric toothbrushes are mainly divided into two categories based on their charging methods: wired charging and wireless charging. Wired charging involves connecting a wire to the electric toothbrush's charging port to charge. Wireless charging typically involves a coil in the electric toothbrush that, together with a wireless charging base, generates a magnetic field. This magnetic field is then transmitted through the toothbrush's receiving coil, generating current to charge the toothbrush. Currently, wireless charging on the market often refers to a wireless connection between the electric toothbrush and the charging base, which usually requires a power source via a wire. This process, where the electric toothbrush must be placed on a powered charging base, is limited by the charging cable and cannot achieve true wireless charging. Furthermore, traditional electric toothbrushes are usually controlled by buttons. During use, water can easily seep into the gaps around the buttons, and this risk increases with prolonged use and aging of the buttons. [Summary of the Invention] To address the limitations of existing charging docks that require a power cord, which necessitates placing the electric toothbrush on the dock and restricts true wireless charging, as well as the issue of water leakage around the buttons on the electric toothbrush, this paper proposes a solution. To address the technical problem, this invention provides an inductively charged wireless toothbrush. This invention is achieved through the following technical solution: A wireless charging toothbrush with inductive charging includes a charging base, an electric toothbrush, and a charging device disposed between the electric toothbrush and the charging base. The charging base includes a housing and a charging base battery disposed within the housing. The electric toothbrush includes a toothbrush shell and a toothbrush battery disposed within the toothbrush shell. The charging device uses the charging base battery as a power source to charge the toothbrush battery. The electric toothbrush also includes a toothbrush controller disposed inside the toothbrush housing, a motor device electrically connected to the toothbrush controller, and a capacitive sensing module electrically connected to the toothbrush controller. The capacitive sensing module is used to sense the position of a human body touching the toothbrush housing and output a corresponding signal. The toothbrush controller adjusts the power of the motor device according to the signal output by the capacitive sensing module.

[0005] As described above, the inductively charged wireless toothbrush further includes a charging base controller electrically connected to the charging base battery. The charging device includes a receiving coil electrically connected to the toothbrush battery and a transmitting coil electrically connected to the charging base controller. The receiving coil and the transmitting coil are paired to wirelessly charge the electric toothbrush.

[0006] As described above, the wireless charging toothbrush with inductive charging has a charging interface on the charging base. When the charging base controller detects that the voltage input to the charging interface is within a preset voltage range, it starts charging the charging base battery. When the charging dock controller detects that the voltage input to the charging interface is outside the preset voltage range, it stops charging the charging dock battery.

[0007] As described above, the inductively charged wireless toothbrush further includes a toothbrush controller electrically connected to the toothbrush battery and the receiving coil. When the receiving coil receives a pulse signal sent by the transmitting coil, the receiving coil sends a feedback signal to the transmitting coil. After receiving the feedback signal, the charging base controller triggers the transmitting coil to operate with preset charging parameters so that the receiving coil generates electrical energy. The toothbrush controller then charges the toothbrush battery by utilizing the electrical energy generated by the receiving coil.

[0008] As described above, the inductively charged wireless toothbrush further includes a toothbrush controller electrically connected to the toothbrush battery and the receiving coil. When the charging base controller starts charging the charging base battery, simultaneously, when the receiving coil receives a pulse signal sent by the transmitting coil, the receiving coil sends a feedback signal to the transmitting coil. After receiving the feedback signal, the transmitting coil triggers the transmitting coil to operate with preset charging parameters, so that the receiving coil generates electrical energy. The toothbrush controller charges the toothbrush battery by utilizing the electrical energy generated by the receiving coil. When the charging dock controller detects that the voltage input to the charging interface is outside the preset voltage range, it stops charging the charging dock battery.

[0009] As described above, the inductively charged wireless charging toothbrush includes a capacitive sensing module that is electrically connected to the toothbrush controller. The touch control module includes a circuit board and capacitive sensing contacts that are electrically connected to the circuit board and located near the inner wall of the toothbrush housing.

[0010] As described above, the inductively charged wireless charging toothbrush contains multiple capacitors. The sensing contacts are continuously arranged on the circuit board to form a sensing area on the toothbrush shell that senses the sliding touch of a human body.

[0011] The inductively charged wireless toothbrush described above further includes a display module electrically connected to the toothbrush controller. The display module includes an indicator light positioned corresponding to the location of the capacitive sensing contact. The capacitive sensing contact sends a signal to the capacitive sensing module, and the capacitive sensing module outputs a signal to the toothbrush controller. The toothbrush controller activates the indicator light corresponding to the location of the capacitive sensing contact based on the output signal from the capacitive sensing module.

[0012] As described above, inductively charged wireless toothbrush has multiple capacitive sensing contacts arranged continuously on the circuit board. The capacitive sensing contacts send signals to the capacitive sensing module, and the capacitive sensing module outputs signals to the toothbrush controller. The toothbrush controller activates the indicator light corresponding to the position of the capacitive sensing contact at the end of the circuit board according to the output signal of the capacitive sensing module.

[0013] The inductively charged wireless toothbrush described above includes a motor drive module and a motor electrically connected to the motor drive module.

[0014] Compared with the prior art, the present invention has the following advantages: This invention relates to an inductively charged wireless toothbrush, which incorporates a charging base battery. When the electric toothbrush is charging on the charging base, the charging base does not require an external power source to charge it, thus eliminating the limitation of needing a power source for the charging base and achieving true wireless charging. During use, the user can freely slide or touch their finger on the position corresponding to the sensing location of the capacitive sensing module on the toothbrush shell. The capacitive sensing module senses the sliding of the finger and outputs a corresponding signal to control the motor. By using a capacitive sensing module to control the motor, instead of a traditional button-controlled electric toothbrush, this invention offers better water resistance and a superior user experience. [Attached Image Description] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 is a front view of the embodiment; Figure 2 is a cross-sectional view at point AA in Figure 1; Figure 3 is a flowchart of the charging process of the charging dock; Figure 4 is a flowchart of the charging process for an electric toothbrush; Figure 5 is a flowchart of the charging process for the charging base and electric toothbrush; Figure 6 is a framework diagram of the charging dock battery charging and discharging management system; Figure 7 is a framework diagram of the toothbrush battery charging and discharging management system; Figure 8 is a half-sectional view of the charging dock in Figure 2; Figure 9 is a schematic diagram of the charging dock. Figure 1 ; Figure 10 is a half-sectional view of Figure 9; Figure 11 is an exploded view of the structure of an electric toothbrush; Figure 12 is a half-sectional view of an electric toothbrush; Figure 13 is a schematic diagram of an embodiment; Figure 14 is the circuit diagram of the capacitive sensing module; Figure 15 is the circuit diagram of the signal processing module; Figure 16 is the circuit diagram of the LED strip; Figure 17 is the circuit diagram of the motor device; Figure 18 is a power supply circuit diagram of an embodiment; Figure 19 is the circuit diagram of the toothbrush controller.

Detailed Implementation Methods

[0018] Please refer to Figures 1 to 10. An inductively rechargeable wireless toothbrush includes a charging base 1, an electric toothbrush 2, and a charging device 3 disposed between the electric toothbrush 2 and the charging base 1. The charging base 1 includes a housing 11 and a charging base battery 12 disposed within the housing 11. The electric toothbrush 2 includes a toothbrush shell 21 and a toothbrush battery 22 disposed within the toothbrush shell 21. The charging device 3 uses the charging base battery 12... The charging base battery is used to charge the toothbrush battery 22. When the charging base battery charges the toothbrush battery, the electric toothbrush and the charging base can be charged wirelessly or via a charging interface.

[0019] This invention relates to an inductively charged wireless toothbrush, which pre-charges a charging base battery within the charging base. The electric toothbrush... When charging on the charging base, the charging base itself does not require an external power source to charge the electric toothbrush, eliminating the limitation of needing a power outlet and achieving true wireless charging. It offers portability, allowing users to carry only the charging base and electric toothbrush, eliminating the need for a separate charger. It also ensures the electric toothbrush remains in a good power state. Conventional electric toothbrushes, when their battery is depleted, cannot start normally and require recharging, rendering them unusable. The charging base provided by this invention ensures the electric toothbrush has a good standby state; when the charging base's battery is low, the user only needs to charge the charging base, without affecting the use of the electric toothbrush.

[0020] Furthermore, as a preferred embodiment of this solution and not a limitation, the charging dock 1 also includes a charging dock controller 14 electrically connected to the charging dock battery 12. Device 3 includes a receiving coil 23 electrically connected to the toothbrush battery 22, and a charging coil 23 electrically connected to the charging battery 22. The power socket controller 14 is electrically connected to the transmitting coil 15, and the receiving coil 23 is connected to the transmitting coil. Coil 15 is paired to wirelessly charge the electric toothbrush 2. In this embodiment, wireless charging between the electric toothbrush and the charging base achieves a waterproof effect. This avoids the problem of moisture entering the toothbrush due to poor sealing, as is common in existing electric toothbrushes that use charging ports. This can damage the toothbrush or, in severe cases, cause leakage and combustion during direct charging, jeopardizing safety.

[0021] Furthermore, as a preferred embodiment of this solution and not a limitation, the charging dock 1 is provided with a charging interface 13, and the charging dock controller 14 detects the input of the charging interface... When the voltage at port 13 is within a preset voltage range, charging of the charging base battery 12 begins; The charging dock controller 14 detects that the voltage input to the charging interface 13 is at a pre-set level. If the voltage is outside the specified range, charging of the charging base battery 12 shall be stopped.

[0022] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the electric toothbrush 2 also includes a toothbrush that is electrically connected to the toothbrush battery 22 and the receiving coil 23 respectively. When the receiving coil 23 receives the pulse signal sent by the transmitting coil 15, the receiving coil 23 sends a feedback signal to the transmitting coil 15. After the transmitting coil 15 receives the feedback signal, the charging dock controller 14 triggers the transmitting coil. 15 operates with preset charging parameters to generate electrical energy in the receiving coil 23, and the toothbrush... The controller 24 charges the toothbrush battery 22 by generating electrical energy using the receiving coil 23.

[0023] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the electric toothbrush 2 also includes a toothbrush that is electrically connected to the toothbrush battery 22 and the receiving coil 23 respectively. Controller 24, the charging dock controller 14 initiates the charging of the charging dock battery 12. When the power is applied, and simultaneously the receiving coil 23 receives the pulse signal sent by the transmitting coil 15, the receiving coil 23 sends a feedback signal to the transmitting coil 15. After the transmitting coil 15 receives the feedback signal, the charging dock controller 14 triggers the transmitting coil. 15 operates with preset charging parameters to generate electrical energy in the receiving coil 23, and the toothbrush... The controller 24 charges the toothbrush battery 22 by generating electrical energy using the receiving coil 23; The charging dock controller 14 detects that the voltage input to the charging interface 13 is at a pre-set level. If the voltage is outside the specified range, charging of the charging base battery 12 shall be stopped.

[0024] Furthermore, as a preferred embodiment of this solution and not a limitation, the charging dock controller 14 includes a charging dock battery charging and discharging management system 141, wherein the charging dock battery charging... The discharge management system 141 includes The charging dock battery charging and discharging management module 1411 includes a charging dock battery charging and discharging management chip for detecting the voltage of the charging dock battery 12, and for the charging dock battery charging and discharging... The management chip starts or stops charging based on the voltage input to the charging interface 13. Battery 12 charging; The charging dock microcontroller unit 1412 is used to control the operation of the charging dock battery charge and discharge management system 141 and monitor the status of the charging dock battery 12 during the charge and discharge process.

[0025] Furthermore, as a preferred embodiment of this solution and not a limitation, the toothbrush controller 24 includes a toothbrush battery charging and discharging management system 241, which includes... The toothbrush battery charge and discharge management module 2411 includes a toothbrush battery charge and discharge management chip for detecting the voltage generated by the receiving coil 23. The toothbrush battery charging and discharging management system 241 detects that the receiving coil 23 generates... When the voltage is within the preset voltage range, the toothbrush battery 22 is charged until it is fully charged; The toothbrush battery charging and discharging management system 241 detects that the receiving coil 23 generates... When the voltage is outside the preset voltage range, charging of the toothbrush battery 22 will stop.

[0026] Furthermore, as a preferred embodiment of this solution and not a limitation, the charging dock controller 14 detects that the voltage of the charging dock battery 12 has reached a preset charging dock battery voltage. When this occurs, the charging dock controller 14 stops charging the charging dock battery 12 and enters a low-power mode; or The toothbrush controller 24 detects that the voltage of the toothbrush battery 22 has reached a preset value. When the battery voltage is low, the toothbrush controller 24 stops charging the toothbrush battery 22, and Enter low power mode.

[0027] Furthermore, as a preferred embodiment of this solution and not a limitation, the charging base 1 is provided with a charging base thermistor for overheat protection of the charging base battery 12. The charging dock controller 14 is activated or deactivated based on the voltage across the thermistor. Charging of the charging base battery 12; or The electric toothbrush 2 includes a toothbrush thermistor, and the toothbrush controller 24 is connected via a root... The charging of the toothbrush battery 22 is started or stopped according to the voltage across the thermistor of the toothbrush.

[0028] Furthermore, as a preferred embodiment of this solution and not a limitation, the charging dock controller 14 detects that the voltage and current of the charging dock battery 12 are at a preset normal voltage. When the flow is outside the range, the charging dock controller 14 issues an alarm; or the toothbrush controller 24 The voltage and current of the toothbrush battery 22 were detected to be outside the preset normal voltage and current range. At that time, the toothbrush controller 24 issues an alarm.

[0029] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the receiving coil is made of copper wire with an outer enamel insulation and has an inductance of 5uH to 100uH.

[0030] Furthermore, as a preferred embodiment of this solution and not a limitation, the charging base battery is a high-efficiency battery with a capacity between 2000mAh and 20000mAh. The toothbrush battery is a high-efficiency battery with a capacity between 700mAh and 2000mAh. This high-efficiency battery includes a protection board.

[0031] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the electric toothbrush 2 includes a toothbrush head 25 disposed on the toothbrush housing 21. The receiving coil is located at the lower end of the toothbrush housing.

[0032] As shown in Figures 9 and 10, the charging base battery 12 is detachably connected to the housing 11, which solves the problem of limited battery power and improves the battery life of the toothbrush charging base.

[0033] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the housing 11 The housing 11 has a battery mounting cavity 114 for accommodating the charging base battery 12 and communicating the interior of the housing 11 with the outside, and a battery cover 115 detachably connected to the housing 11. When the battery cover 115 is connected to the housing 11, it restricts the charging base battery 12 within the housing 11. The battery is installed in the battery mounting cavity 114, and the charging base battery 12 is electrically connected to the charging base controller 14. The charging base battery can be a dry cell battery or a rechargeable battery.

[0034] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the housing 11 is provided with a charging interface 13 for connecting to an external power source, and the charging base battery 12 is charged using the external power source connected to the charging interface 13 as the power source.

[0035] Furthermore, as a preferred embodiment of this solution and not a limitation, the charging base battery 12 is disposed inside the upper part of the housing 11 and spaced apart from the bottom of the housing 11. The charging dock controller 14, the charging interface 13, and the transmitting coil 15 are all connected to the charging dock controller 14, the charging interface 13, and the transmitting coil 15. The bottom of the housing 11 is spaced apart. This helps prevent the charging dock controller, charging interface, transmitting coil, and charging dock battery from coming into contact with water at the bottom of the housing and causing damage when water enters the housing.

[0036] Furthermore, as a preferred embodiment of this solution and not a limitation, the housing 11 is provided with a placement slot 111 for placing the electric toothbrush. The center of gravity of the electric toothbrush is located within the placement slot 111. When the electric toothbrush is placed on the placement slot, a stable placement effect is achieved, thereby maintaining a stable charging effect for the electric toothbrush.

[0037] Furthermore, as a preferred embodiment of this solution and not a limitation, the housing 11 is provided with a placement platform 112 corresponding to the back of the placement slot 111, and the transmitting coil... 15. The placement platform 112 is positioned close to the placement slot. Because the placement slot is designed to fit the shape of the electric toothbrush, it is difficult to place the transmitting coil on it. By setting up the placement platform, not only can the transmitting coil be stably installed, but the wall thickness of the housing can also be reduced, avoiding difficulties in matching with the receiving coil.

[0038] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the charging device 3 includes a charging port 117 disposed on the placement slot 111, the charging port 117 being used for... It is electrically connected to an electric toothbrush placed on the placement slot 111.

[0039] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the housing 11 It is equipped with a magnetic attraction device corresponding to the position of the placement slot 111. The magnetic attraction device is used for It magnetically engages with the electric toothbrush to hold the electric toothbrush on the placement slot 111.

[0040] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the housing 11 is provided with a waterproof plug 116 for sealing the charging interface 13.

[0041] Furthermore, as a preferred embodiment of this solution and not a limitation, a heat dissipation space 113 is provided between the charging base battery 12 and the housing 11, the charging base controller 14, and the transmitting coil 15.

[0042] Please refer to Figures 11 to 19, which include a toothbrush housing 21, a toothbrush controller 24 disposed within the toothbrush housing 21, a motor device 26 electrically connected to the toothbrush controller 24, and a capacitive sensing module 4 electrically connected to the toothbrush controller 24. Used to sense the position of a human body touching the toothbrush shell 21 and output a corresponding signal, the The toothbrush controller 24 adjusts the motor assembly according to the signal output by the capacitive sensing module 4. The power is set to 26.

[0043] The electric toothbrush of this invention utilizes capacitive sensing control. During use, the user can press their finger against the position corresponding to the sensing position of the capacitive sensing module on the toothbrush shell. The finger can be freely slid or touched, and the capacitive sensing module senses the finger's movement and outputs a corresponding signal to control the motor. By using a capacitive sensing module to control the motor, instead of a traditional button-controlled electric toothbrush, this invention offers better water resistance and a superior user experience.

[0044] Furthermore, as a preferred embodiment of this solution and not a limitation, the capacitive sensing module 4 includes a touch control module 43 electrically connected to the toothbrush controller 24. The touch control module 43 includes a circuit board 41 and capacitive sensing contacts 411 electrically connected to the circuit board 41 and disposed near the inner wall of the toothbrush housing 21. In this invention, the capacitive sensing module has multiple capacitive sensing contacts on the circuit board. Because there is capacitance between the capacitive sensing contacts and the circuit board, when a human finger touches the toothbrush housing, an inductive capacitance is generated between the finger and the capacitive sensing contacts. This inductive capacitance changes the original capacitance value of the capacitive sensing contacts, and the capacitive sensing module transmits this signal to the signal processing module for further processing. The capacitive sensing contacts are located near the inner wall of the toothbrush housing, and their function is to sense the position of the user's finger on the toothbrush housing, thereby outputting a corresponding signal to the toothbrush controller.

[0045] Furthermore, as a preferred embodiment of this solution and not a limitation, a plurality of capacitive sensing contacts 411 are continuously arranged on the circuit board 41 to form a sensing area on the toothbrush housing 21 for sensing human body sliding and touching it. The plurality of capacitive sensing contacts are distributed in a straight line to facilitate sensing when a finger slides.

[0046] Furthermore, as a preferred embodiment of this solution and not a limitation, it also includes a display module 432 electrically connected to the toothbrush controller 24. The display module 432 includes an indicator light 27 positioned corresponding to the capacitive sensing contact 411. The capacitive sensing contact 411 sends a signal to the capacitive sensing module 4, and the capacitive sensing module 4 outputs a signal. The toothbrush controller 24 is supplied with a signal, which, based on the output signal of the capacitive sensing module 4, activates the indicator light 27 corresponding to the position of the capacitive sensing contact 411. The indicator light is directly driven by the toothbrush controller. When the sensing position changes, the toothbrush controller adjusts the display state according to the sensing position by turning the I / O port driving the indicator light on and off. Using capacitive sensing offers more stable performance and lower cost compared to touchscreens on the market. Users touch the sensing area of ​​the touch control module on the electric toothbrush to control its on / off state and mode adjustment. The touch control panel is divided into multiple areas, each representing a different functional mode. When a user touches a corresponding area, the corresponding working mode is activated, and the corresponding display module will change color (brighter, dimmer, etc.) to inform the user of the current mode.

[0047] Furthermore, as a preferred embodiment of this solution and not a limitation, a plurality of the capacitive sensing contacts 411 are continuously arranged on the circuit board 41. The capacitive sensing contacts 411 send signals to the capacitive sensing module 4, and the capacitive sensing module 4 outputs signals to the toothbrush controller 24. The toothbrush controller 24 then determines the appropriate signal based on the input from the capacitive sensing module 4. A signal is sent to activate the indicator lights 27 corresponding to the positions from the capacitive sensing contact 411 to the end of the circuit board 41. All indicator lights from the end to the capacitive sensing contact are illuminated, using a light strip display method. The output information is simple and easy to understand, resulting in a better user experience.

[0048] Furthermore, as a preferred embodiment of this solution and not a limitation, it also includes a signal processing module 42 electrically connected to the toothbrush controller 24 and the capacitive sensing module 4. The signal processing module 42 includes a capacitor oscillation circuit, a frequency detection circuit, and a driving circuit. The signal from the capacitor sensing module is input to the capacitor oscillation circuit, causing the capacitor oscillation circuit to... The reference voltage changes repeatedly within a certain range, causing the oscillator to oscillate continuously. The periodic oscillation signal enters the frequency detection circuit, allowing the calculation of its oscillation frequency. When a human finger touches the capacitive sensing module, the capacitance on the module changes. This change, after passing through the capacitive vibration circuit and the frequency detection circuit, allows the calculation of the oscillator's frequency. By comparing the frequency change of the capacitive sensing module before and after being touched, the drive circuit outputs different level signals, thereby determining the sensing position of the capacitive sensing module.

[0049] Furthermore, as a preferred embodiment of this solution and not a limitation, the inner wall of the toothbrush housing 21 is recessed with a light strip groove 211 for mounting the indicator light 27. 211 is integrally molded with the toothbrush shell 21. It adopts a capacitive sensing control method, resulting in better water resistance. The shell uses a one-piece structure, eliminating the need for grooves, thus improving the product's waterproof performance and extending its lifespan.

[0050] Furthermore, as a preferred embodiment of this solution and not a limitation, the motor device 26 includes a motor drive module 261 and a motor 262 electrically connected to the motor drive module 261. The toothbrush controller includes a microcontroller with multiple 10-bit A / D conversion channels, a 16-bit timer, and general-purpose I / O ports. When the toothbrush controller detects a change in the signal input from the signal processing module, it first determines the position of the touch on the capacitive sensing module, and then controls the display of the indicator light and the power of the motor device based on this information.

[0051] Furthermore, as a preferred embodiment of this solution and not a limitation, the motor drive module 261 includes multiple N-channel metal-oxide-semiconductor (MOSFETs), P-channel MOSFETs, and integrated transistors. When the touch position changes, the toothbrush controller adjusts the state of the I / O ports connected to the transistors and MOSFETs, thereby controlling the on and off times of the transistors and MOSFETs to change the motor's operating state.

[0052] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the toothbrush housing 21 includes a handle, and the sensing area of ​​the capacitive sensing module 4 is located on the handle. Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the toothbrush housing 21 includes a handle, and the sensing area of ​​the capacitive sensing module 4 is located on the handle. The housing is equipped with a toothbrush power switch that is electrically connected to the toothbrush controller 24. The working principle of this embodiment is as follows: Operating Condition 1: When charging the charging dock alone, an external power source is connected to the charging port. When the charging dock controller detects the external power input, it first checks whether the charging voltage is within the preset voltage range. If the input voltage is within the preset voltage range, charging of the charging dock battery begins; if the input voltage is not within the preset voltage range, charging stops and an alert is issued. During charging, the charging dock controller monitors the status of the charging dock battery in real time. If everything is normal, charging continues. When the charging dock battery is fully charged, the charging dock controller stops charging the charging dock battery and enters a low-power mode. If the status of the charging dock battery becomes abnormal during charging, the charging dock controller immediately stops charging the battery and issues a warning signal.

[0053] Operating Scenario 2: When charging the electric toothbrush alone, when the receiving coil inside the toothbrush receives a pulse signal from the transmitting coil, the receiving coil sends a charging signal back to the transmitting coil. Upon receiving the feedback signal, the transmitting coil transmits energy through the preset charging parameters set on the toothbrush controller. The receiving coil then converts the received energy into DC power via a conversion circuit. The toothbrush controller, upon detecting the DC charging signal, first checks if the charging voltage is within the preset voltage range. If the input voltage is within the preset range, charging of the toothbrush battery begins; if the input voltage is outside the preset range, charging stops and a notification is issued. During battery charging, the toothbrush controller monitors the battery status in real time. If everything is normal, charging continues. When the battery is fully charged, the toothbrush controller stops charging the battery and sends a signal to the transmitting coil. The coil provides a full charge signal; if the toothbrush battery status becomes abnormal during charging, the toothbrush controller immediately stops charging the battery and issues a warning signal.

[0054] Operating Scenario 3: When charging both the electric toothbrush and charging base simultaneously, an external power source is connected to the charging port. Upon detecting the external power input, the charging base controller first checks if the charging voltage is within the preset voltage range. If the input voltage is within the preset range, charging of the charging base battery begins; if the input voltage is not within the preset range, charging stops and a notification is issued, and the transmitting coil stops emitting energy. Simultaneously with the external power supply to the charging base battery, the transmitting coil emits a pulse signal. When the receiving coil inside the electric toothbrush receives the pulse signal from the transmitting coil, it sends a charging signal back to the transmitting coil. Upon receiving the feedback signal, the transmitting coil transmits energy through the preset charging parameters set on the toothbrush controller. The receiving coil then converts the received energy into DC power via a conversion circuit. Upon detecting the DC charging signal, the toothbrush controller first checks if the charging voltage is within the preset voltage range. If the input voltage is within the preset range, charging of the toothbrush battery begins; if the input voltage is not within the preset range, charging stops and a notification is issued. During simultaneous charging, the two controllers monitor the battery status in each system in real time. If everything is normal, charging continues. When the toothbrush battery is fully charged, the toothbrush controller stops charging the battery and sends a full charge signal back to the transmitting coil. After receiving the feedback signal, the charging dock controller stops the transmitting coil from transmitting energy. When the charging dock battery is fully charged, the charging dock controller stops charging the battery and enters a low-power mode. If the battery status is abnormal during charging, the controller immediately stops charging the battery and issues a warning signal.

[0055] Since the charging dock controller and the toothbrush controller have some of the same functions, for ease of description, the charging dock controller's charging and discharging management system and the toothbrush controller's... This is a toothbrush battery charging and discharging management system, hereinafter referred to as the battery charging and discharging management system. The charging dock controller and toothbrush controller are hereinafter referred to as the controller. The toothbrush battery and charging dock battery are hereinafter referred to as the battery. The battery charging and discharging management system internally includes a battery charging and discharging management module and a microcontroller unit. The charging and discharging management module contains a battery charging and discharging management chip, which can detect the input voltage to enable or disable its function. By changing the resistance, the charging voltage and charging current can be adjusted. During charging, the voltage across a negative temperature coefficient thermistor is detected to determine if the battery is overheating. If the temperature exceeds the set value, the system will stop charging and resume charging when the temperature returns to normal. The microcontroller unit contains a microcontroller with multiple 10-bit A / D conversion channels, a 16-bit timer, and general-purpose I / O ports. When the system discharges, the charging and discharging management chip detects the battery voltage in real time, while the microcontroller unit detects the battery discharge current in real time. Both work together to monitor the battery status and prevent irreversible damage.

[0056] The present invention relates to an inductively charged wireless toothbrush, which pre-charges a charging base battery within the charging base. When the electric toothbrush is charging on the charging base, the charging base does not require an external power source to charge the toothbrush, thus eliminating the limitation of the charging base needing a power source and achieving true wireless charging.

[0057] The above are implementation methods provided in conjunction with specific content, and it is not intended that the specific implementation of this application is limited to these descriptions. Any methods or structures that are similar to those of this application, or any technical deductions or substitutions made based on the concept of this application, should be considered within the scope of protection of this application.

Claims

1. An inductively charged wireless toothbrush, characterized in that: Includes a charging base (1), an electric toothbrush (2), and a device disposed between the electric toothbrush (2) and the charging base. (1) The charging device (3) between the charging base (1) includes a housing (11) and a charging base battery (12) disposed in the housing (11). The electric toothbrush (2) includes a toothbrush shell (21) and a toothbrush battery (22) disposed in the toothbrush shell (21). The charging device (3) uses the charging base battery (12) as a power source to charge the toothbrush battery (22). The electric toothbrush (2) further includes a toothbrush controller (24) disposed inside the toothbrush housing (21), a motor device (26) electrically connected to the toothbrush controller (24), and a capacitive sensing module (4) electrically connected to the toothbrush controller (24). (4) Used to sense the position of the human body touching the toothbrush shell (21) to output a corresponding signal, and the toothbrush controller (24) adjusts the power of the motor device (26) according to the signal output by the capacitive sensing module (4); The charging base (1) further includes a charging base controller (14) electrically connected to the charging base battery (12), and the charging device (3) includes a receiving coil (23) electrically connected to the toothbrush battery (22) and a transmitting coil (15) electrically connected to the charging base controller (14). The receiving coil (23) and the transmitting coil (15) are paired to wirelessly charge the electric toothbrush (2). The capacitive sensing module (4) includes a touch control module (43) electrically connected to the toothbrush controller (24). The touch control module (43) includes a circuit board (41) and a capacitive sensing contact (411) electrically connected to the circuit board (41) and disposed near the inner wall of the toothbrush housing (21). Multiple capacitive sensing contacts (411) are arranged in succession on the circuit board (41) to form a sensing area on the toothbrush housing (21) for sensing human body sliding and touching it.

2. The inductively charged wireless toothbrush according to claim 1, characterized in that: The charging dock (1) is provided with a charging interface (13). When the charging dock controller (14) detects that the voltage input to the charging interface (13) is within the preset voltage range, it starts to charge the charging dock battery (12). When the charging dock controller (14) detects that the voltage input to the charging interface (13) is outside the preset voltage range, it stops charging the charging dock battery (12).

3. The inductively charged wireless toothbrush according to claim 2, characterized in that: The electric toothbrush (2) also includes a toothbrush controller (24) electrically connected to the toothbrush battery (22) and the receiving coil (23). When the receiving coil (23) receives the pulse signal sent by the transmitting coil (15), the receiving coil (23) sends a feedback signal to the transmitting coil (15). After the transmitting coil (15) receives the feedback signal, the charging dock controller (14) triggers the transmitting coil (15) to work with preset charging parameters so that the receiving coil (23) generates electrical energy. The toothbrush controller (24) charges the toothbrush battery (22) by using the electrical energy generated by the receiving coil (23).

4. The inductively charged wireless toothbrush according to claim 2, characterized in that: The electric toothbrush (2) also includes a toothbrush controller (24) electrically connected to the toothbrush battery (22) and the receiving coil (23). When the charging base controller (14) starts charging the charging base battery (12), at the same time, when the receiving coil (23) receives the pulse signal sent by the transmitting coil (15), the receiving coil (23) sends a feedback signal to the transmitting coil (15). After the transmitting coil (15) receives the feedback signal, the charging base controller (14) triggers the transmitting coil (15) to work with preset charging parameters so that the receiving coil (23) generates electrical energy. The toothbrush controller (24) charges the toothbrush battery (22) by using the electrical energy generated by the receiving coil (23). When the charging dock controller (14) detects that the voltage input to the charging interface (13) is outside the preset voltage range, it stops charging the charging dock battery (12).

5. The inductively charged wireless toothbrush according to claim 1, characterized in that: It also includes a display module (432) electrically connected to the toothbrush controller (24). The display module (432) includes an indicator light (27) located at the position of the capacitive sensing contact (411). The capacitive sensing contact (411) sends a signal to the capacitive sensing module (4). The capacitive sensing module (4) outputs a signal to the toothbrush controller (24). The toothbrush controller (24) activates the indicator light (27) corresponding to the position of the capacitive sensing contact (411) according to the output signal of the capacitive sensing module (4).

6. The inductively charged wireless toothbrush according to claim 5, characterized in that: Multiple capacitive sensing contacts (411) are arranged continuously on the circuit board (41). The capacitive sensing contacts (411) send signals to the capacitive sensing module (4). The capacitive sensing module (4) outputs signals to the toothbrush controller (24). The toothbrush controller (24) activates the indicator light (27) corresponding to the position of the capacitive sensing contact (411) at the end of the circuit board (41) according to the output signal of the capacitive sensing module (4).

7. The inductively charged wireless toothbrush according to claim 1, characterized in that: The motor device (26) includes a motor drive module (261) and a motor (262) electrically connected to the motor drive module (261).

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