Low-cost wireless charging toothbrush

Abstract

The utility model discloses a low-cost wireless charging toothbrush. The low-cost wireless charging toothbrush comprises a control module, a wireless charging module and a motor module, the control module is electrically connected with the wireless charging module and the motor module. The wireless charging module comprises a built charging control circuit; the wireless charging module is used for transmitting electric energy through the wireless receiving coil and charging the storage battery; the charging control circuit is used for controlling and managing the wireless charging process; the motor module is used for controlling a motor. The waterproof performance grade of the toothbrush is improved by adopting wireless charging, the cost of a product is reduced by replacing an existing wireless charging management chip with the self-built charging control circuit, and the practical functions of automatically controlling charging or stopping charging and the like can be achieved according to the battery voltage state by arranging the voltage detection circuit of the battery voltage.

Description

Technical Field

[0001] The utility model relates to the technical field of electric toothbrushes, and particularly relates to a low-cost wireless charging toothbrush. Background Art

[0002] At present, with the improvement of living quality, people have higher and higher requirements for oral protection, and electric toothbrushes with better cleaning effects have emerged as the times require. Toothbrushes are essential daily necessities for people. The emergence of electric toothbrushes has brought some convenience to people's washing. In related technologies, from the principle point of view, there are two major categories of electric toothbrushes: rotation and vibration. The principle of the rotary toothbrush is simple, that is, the motor drives the circular brush head to rotate. In the vibration type toothbrush, there is an electric drive vibration motor inside, which can make the brush head generate high-frequency swings perpendicular to the direction of the brush handle.

[0003] For the convenience of use, electric toothbrushes all adopt the design of rechargeable batteries. The wired charging lithium battery electric toothbrush has poor waterproof performance, the charger interface position cannot be touched by water, and a battery management chip is used for charging management, resulting in higher costs. When using wired charging and batteries, it will cause inconvenience itself, and water may penetrate into the internal circuit of the electric toothbrush through the charging socket or the battery case back shell, causing harm. Summary of the Utility Model

[0004] The existing electric toothbrushes adopt wired charging nickel-hydrogen and its management chips, which not only have poor waterproof performance but also have higher costs.

[0005] In view of the above problems, a low-cost wireless charging toothbrush is proposed. By adopting wireless charging, the waterproof performance level of the toothbrush is improved. By using a self-built charging control circuit to replace the existing wireless charging management chip, the cost of the product is reduced. By setting a voltage detection circuit for the battery voltage, practical functions such as autonomous charging control or charging stop can be carried out according to the battery voltage state.

[0006] A low-cost wireless charging toothbrush includes:

[0007] A control module;

[0008] A wireless charging module;

[0009] An electric motor module;

[0010] The control module is electrically connected to the wireless charging module and the electric motor module respectively;

[0011] The wireless charging module includes a built charging control circuit;

[0012] The wireless charging module is used for transmitting electric energy through a wireless receiving coil to charge a storage battery;

[0013] The charging control circuit is used to control and manage the wireless charging process;

[0014] The motor module is used to control the motor.

[0015] In the first possible implementation manner in combination with the low-cost wireless charging toothbrush of the present invention, the wireless charging module further includes:

[0016] A monitoring circuit;

[0017] A rectifying circuit;

[0018] A voltage detection circuit;

[0019] The monitoring circuit, the rectifying circuit, the charging control circuit, and the voltage detection circuit are electrically connected;

[0020] The monitoring circuit is used to monitor the wireless charging process;

[0021] The rectifying circuit is used to rectify the current input by the receiving coil;

[0022] The voltage detection circuit is used to detect the battery voltage.

[0023] In the second possible implementation manner in combination with the low-cost wireless charging toothbrush of the present invention, the control module includes:

[0024] A control chip;

[0025] An indication circuit;

[0026] The control chip is electrically connected to the indication circuit;

[0027] The indication circuit is used to indicate the working state of the toothbrush.

[0028] In the third possible implementation manner in combination with the first possible implementation manner of the present invention, the monitoring circuit includes:

[0029] A first resistor, a second resistor, a third resistor, and a first triode;

[0030] The first end of the first resistor is electrically connected to the rectifying circuit, and the second end is electrically connected to the base of the first triode and the first end of the second resistor;

[0031] The second end of the second resistor and the emitter of the first triode are commonly connected and then grounded;

[0032] The collector of the first triode is electrically connected to the control chip and the first end of the third resistor, and the second end of the third resistor is connected to the power supply.

[0033] Combined with the first possible implementation manner of the present utility model, in the fourth possible implementation manner, the rectification circuit includes:

[0034] a first capacitor, a second capacitor, a third capacitor, and a first diode;

[0035] The first capacitor and the second capacitor are connected in parallel, and both ends are respectively connected to the two input ends of the receiving coil. After being connected in parallel, one end is also electrically connected to the anode of the first diode, and the other end is also commonly connected to the second end of the third capacitor and then grounded. The cathode of the first diode is electrically connected to the first end of the third capacitor.

[0036] Combined with the first possible implementation manner of the present utility model, in the fifth possible implementation manner, the voltage detection circuit includes:

[0037] a fourth resistor;

[0038] The first end of the fourth resistor is electrically connected to the positive charging end of the storage battery, and the second end is electrically connected to the control chip.

[0039] Combined with the second possible implementation manner of the present utility model, in the sixth possible implementation manner, the indication circuit includes:

[0040] a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a first indication diode, a second indication diode, a third indication diode, and a fourth indication diode;

[0041] One ends of the fifth resistor, the sixth resistor, the seventh resistor, and the eighth resistor are respectively electrically connected to one ends of the first indication diode, the second indication diode, the third indication diode, and the fourth indication diode; the other ends of the fifth resistor, the sixth resistor, the seventh resistor, and the eighth resistor are connected to the enable end of the control chip, and the other ends of the first indication diode, the second indication diode, the third indication diode, and the fourth indication diode are respectively electrically connected to the control chip.

[0042] Combined with the first possible implementation manner of the present utility model, in the seventh possible implementation manner, the motor module includes:

[0043] a ninth resistor, a tenth resistor, a motor chip, a second diode, and a fourth capacitor;

[0044] The first end of the ninth resistor is electrically connected to the control chip, and the second end is electrically connected to the first end of the tenth resistor, the first pin, and the third pin of the motor chip. The second end of the tenth resistor is grounded. The second pin and the fifth pin of the motor chip are shorted and then electrically connected to the anode of the second diode, the negative terminal of the motor, and the first end of the fourth capacitor. The fourth pin and the sixth pin of the motor chip are shorted and then grounded. The cathode of the second diode, the positive terminal of the motor, and the second end of the fourth capacitor are commonly connected and then connected to the power supply.

[0045] Implementing the low-cost wireless charging toothbrush of the present utility model, through the adoption of wireless charging, the waterproof performance level of the toothbrush is improved. By using the self-built charging control circuit to replace the existing wireless charging management chip, the cost of the product is reduced. By setting up the voltage detection circuit for the battery voltage, practical functions such as autonomous control of charging or stopping charging can be achieved according to the battery voltage state. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0047] Figure 1 It is a schematic diagram of the module connection of the low-cost wireless charging toothbrush of the present utility model;

[0048] Figure 2 It is a schematic diagram of the wireless charging module circuit of the present utility model;

[0049] Figure 3 It is a schematic diagram of the control module circuit of the present utility model;

[0050] Figure 4 It is a schematic diagram of the motor module circuit of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0051] The following will clearly and completely describe the technical solutions in the present utility model in conjunction with the drawings in the utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments in the present utility model, other embodiments obtained by those of ordinary skill in the art without creative efforts all fall within the protection scope of the present utility model.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this utility model belongs. The terms used in the description of this utility model in this article are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0053] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0054] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this application.

[0055] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality of" means two or more unless otherwise specifically defined.

[0056] Existing electric toothbrushes use wired charging nickel-metal hydride and its management chips, which not only have poor waterproof performance but also are relatively costly.

[0057] In view of the above problems, a low-cost wireless charging toothbrush is proposed.

[0058] A low-cost wireless charging toothbrush, such as Figure 1 , Figure 1Schematic diagram of module connection of the low-cost wireless charging toothbrush of the present utility model; it includes a control module 100, a wireless charging module 200, and a motor module 300; the control module 100 is electrically connected to the wireless charging module 200 and the motor module 300 respectively; the wireless charging module 200 includes a built charging control circuit 210; the wireless charging module 200 is used for electric energy transmission through a wireless receiving coil to charge a storage battery; the charging control circuit 210 is used for controlling and managing the wireless charging process; the motor module 300 is used for controlling the motor. By adopting wireless charging, the waterproof performance level of the toothbrush is improved. By using the self-built charging control circuit 210 to replace the existing wireless charging management chip, the cost of the product is reduced. By setting a voltage detection circuit 240 for the battery voltage, practical functions such as autonomously controlling charging or stopping charging can be realized according to the battery voltage state.

[0059] In this application, by building the charging control circuit 210 to replace the traditional charging management chip, the cost is reduced. Its circuit structure is as Figure 2 shown. The charging control circuit 210 includes resistors (R11, R12, R13, R14, R15), MOS transistor Q2, triode Q2, voltage regulator diode D8, diode D2, and is electrically connected to the PB1 pin of the control chip U1 through resistor R15.

[0060] Furthermore, as Figure 2 , Figure 2 is the schematic diagram of the circuit of the wireless charging module 200 of the present utility model; the wireless charging module 200 further includes a monitoring circuit 220, a rectifying circuit 230, and a voltage detection circuit 240; the monitoring circuit 220, the rectifying circuit 230, the charging control circuit 210, and the voltage detection circuit 240 are electrically connected; the monitoring circuit 220 is used for monitoring the wireless charging process; the rectifying circuit 230 is used for rectifying the current input by the receiving coil; the voltage detection circuit 240 is used for detecting the battery voltage.

[0061] Furthermore, as Figure 3 , Figure 3 is the schematic diagram of the circuit of the control module 100 of the present utility model; the control module 100 includes a control chip U1 and an indication circuit 110; the control chip U1 is electrically connected to the indication circuit 110; the indication circuit 110 is used for indicating the working state of the toothbrush.

[0062] Specifically, the monitoring circuit 220 includes: a first resistor R1, a second resistor R2, a third resistor R3, and a first triode Q1; a first end of the first resistor R1 is electrically connected to the rectifying circuit 230, and a second end thereof is electrically connected to the base of the first triode Q1 and a first end of the second resistor R2; a second end of the second resistor R2 and an emitter of the first triode Q1 are commonly connected and then grounded; a collector of the first triode Q1 is electrically connected to the control chip U1 and a first end of the third resistor R3, and a second end of the third resistor R3 is connected to a power supply.

[0063] The collector of the first triode Q1 is electrically connected to the PB2 pin of the control chip U1.

[0064] Specifically, the rectifying circuit 230 includes a first capacitor C1, a second capacitor C2, a third capacitor C3, and a first diode D1; the first capacitor C1 and the second capacitor C2 are connected in parallel, and two ends thereof are respectively connected to two input ends of the receiving coil. After being connected in parallel, one end thereof is electrically connected to an anode of the first diode D1, and the other end is commonly connected to a second end of the third capacitor C3 and then grounded. A cathode of the first diode D1 is electrically connected to a first end of the third capacitor C3.

[0065] Specifically, the voltage detection circuit 240 includes a fourth resistor R4; a first end of the fourth resistor R4 is electrically connected to a positive charging end of the storage battery, and a second end thereof is electrically connected to the control chip U1 (PA0 pin).

[0066] Specifically, the indication circuit 110 includes: a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a first indication diode D4, a second indication diode D5, a third indication diode D6, and a fourth indication diode D7; one ends of the fifth resistor R5, the sixth resistor R6, the seventh resistor R7, and the eighth resistor R8 are respectively electrically connected to one ends of the first indication diode D4, the second indication diode D5, the third indication diode D6, and the fourth indication diode D7; the other ends of the fifth resistor R5, the sixth resistor R6, the seventh resistor R7, and the eighth resistor R8 are connected to an enable end EN of the control chip U1, and the other ends of the first indication diode D4, the second indication diode D5, the third indication diode D6, and the fourth indication diode D7 are respectively electrically connected to the control chip U1 (PD2 pin, PD3 pin, PB3 pin, PD0 pin).

[0067] Specifically, as Figure 4 , Figure 4It is a circuit schematic diagram of the motor module 300 of the present utility model. The motor module 300 includes a ninth resistor R9, a tenth resistor R10, a motor chip U2, a second diode D3, and a fourth capacitor C4. The first end of the ninth resistor R9 is electrically connected to the control chip U1 (PB0 pin), and the second end is electrically connected to the first end of the tenth resistor R10, the first pin G1, and the third pin G2 of the motor chip U2. The second end of the tenth resistor R10 is grounded. The second pin D1 / D2 and the fifth pin D1 / D2 of the motor chip U2 are short-circuited and then electrically connected to the anode of the second diode D3, the negative electrode M- of the motor, and the first end of the fourth capacitor C4. The fourth pin S2 and the sixth pin S1 of the motor chip U2 are short-circuited and then grounded. The cathode of the second diode D3, the positive electrode end M+ of the motor, and the second end of the fourth capacitor C4 are commonly connected and then connected to the power supply.

[0068] For the low-cost wireless charging toothbrush implementing the present utility model, by adopting wireless charging, the waterproof performance level of the toothbrush is improved. By using the self-built charging control circuit to replace the existing wireless charging management chip, the cost of the product is reduced. By setting the voltage detection circuit of the battery voltage, practical functions such as autonomous control of charging or stopping charging can be realized according to the battery voltage state.

[0069] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A low-cost wireless charging toothbrush, characterized in that: include: Control module; Wireless charging module; Motor module; The control module is electrically connected to the wireless charging module and the motor module respectively; The wireless charging module includes a built charging control circuit; The wireless charging module is used to transmit electric energy through a wireless receiving coil to charge the battery; The charging control circuit is used to control and manage the wireless charging process; The motor module is used to control the motor.

2. The low-cost wireless charging toothbrush according to claim 1, characterized in that: The wireless charging module also includes: Monitoring circuit; Rectification circuit; Voltage detection circuit; The monitoring circuit, the rectifying circuit, the charging control circuit, and the voltage detection circuit are electrically connected in sequence; The monitoring circuit is used to monitor the wireless charging process; The rectifier circuit is used to rectify the current input by the receiving coil; The voltage detection circuit is used to detect the battery voltage.

3. The low-cost wireless charging toothbrush according to claim 1, characterized in that: The control module comprises: Control chip; Indicator circuit; The control chip is electrically connected to the indication circuit; The indicating circuit is used to indicate the working state of the toothbrush.

4. The low-cost wireless charging toothbrush according to claim 2, characterized in that: The monitoring circuit comprises: A first resistor, a second resistor, a third resistor and a first transistor; The first end of the first resistor is electrically connected to the rectifier circuit, and the second end is electrically connected to the base of the first transistor and the first end of the second resistor; The second end of the second resistor and the emitter of the first transistor are connected together and then grounded; The collector of the first transistor is electrically connected to the control chip and the first end of the third resistor, and the second end of the third resistor is connected to a power source.

5. The low-cost wireless charging toothbrush according to claim 2, characterized in that: The rectifier circuit comprises: A first capacitor, a second capacitor, a third capacitor and a first diode; The first capacitor and the second capacitor are connected in parallel, and both ends are connected to the two input ends of the receiving coil respectively. After being connected in parallel, one end is also electrically connected to the anode of the first diode, and the other end is also connected to the second end of the third capacitor and then grounded. The cathode of the first diode is electrically connected to the first end of the third capacitor.

6. The low-cost wireless charging toothbrush according to claim 2, characterized in that: The voltage detection circuit comprises: a fourth resistor; The first end of the fourth resistor is electrically connected to the positive charging terminal of the battery, and the second end is electrically connected to the control chip.

7. The low-cost wireless charging toothbrush according to claim 3, characterized in that: The indicating circuit comprises: a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a first indicator diode, a second indicator diode, a third indicator diode and a fourth indicator diode; One end of the fifth resistor, the sixth resistor, the seventh resistor, and the eighth resistor are electrically connected to one end of the first indicator diode, the second indicator diode, the third indicator diode, and the fourth indicator diode, respectively; the other ends of the fifth resistor, the sixth resistor, the seventh resistor, and the eighth resistor are connected to the enable end of the control chip, and the other ends of the first indicator diode, the second indicator diode, the third indicator diode, and the fourth indicator diode are electrically connected to the control chip, respectively.

8. The low-cost wireless charging toothbrush according to claim 2, characterized in that: The motor module comprises: A ninth resistor, a tenth resistor, a motor chip, a second diode, and a fourth capacitor; The first end of the ninth resistor is electrically connected to the control chip, and the second end is electrically connected to the first end of the tenth resistor, the first pin and the third pin of the motor chip. The second end of the tenth resistor is grounded. The second pin of the motor chip is short-circuited with the fifth pin and then electrically connected to the anode of the second diode, the negative terminal of the motor and the first end of the fourth capacitor. The fourth pin of the motor chip is short-circuited with the sixth pin and then grounded. The cathode of the second diode, the positive terminal of the motor and the second end of the fourth capacitor are connected together and then connected to a power supply.

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