CN218888435U - Electric toothbrush motor drive control circuit and electric toothbrush - Google Patents
Electric toothbrush motor drive control circuit and electric toothbrush Download PDFInfo
- Publication number
- CN218888435U CN218888435U CN202221854407.7U CN202221854407U CN218888435U CN 218888435 U CN218888435 U CN 218888435U CN 202221854407 U CN202221854407 U CN 202221854407U CN 218888435 U CN218888435 U CN 218888435U
- Authority
- CN
- China
- Prior art keywords
- resistor
- terminal
- electric
- charging
- control circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Brushes (AREA)
Abstract
The application provides an electric toothbrush motor drive control circuit and an electric toothbrush. The motor driving control circuit of the electric toothbrush comprises an electric control circuit and a motor driving circuit; the electric control circuit comprises a control key, an electric controller and a first resistor, the control key is connected with the input end of the electric controller, and the second end of the first resistor is connected with the input end of the electric controller; the motor driving circuit comprises a motor driver, a second resistor, a third resistor, a fourth resistor and a fifth resistor, wherein the second end of the second resistor is connected with the first input end of the motor driver, and the second end of the fourth resistor is connected with the second input end of the motor driver. After the control key is pressed down, the motor driver performs differential processing on the two motor driving signals, so that common errors between the two motor driving signals are mutually offset, the motor control signals output by the motor driver are more accurate, and the driving precision of the motor is effectively improved.
Description
Technical Field
The utility model relates to an electric toothbrush technical field especially relates to an electric toothbrush motor drive control circuit and electric toothbrush.
Background
At present, more and more rechargeable toothbrushes of hand-held type use electric toothbrush can be fine liberate both hands and brush teeth for the tooth is brushed cleaner more.
However, the motor driving of the conventional electric toothbrush basically adopts a single control signal input and a single signal output, and when an error or interference occurs in the driving input signal, it is often easy to cause an abnormality in the driving of the motor, for example, the running accuracy of the motor is reduced, and the service life of the motor is seriously reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the weak point among the prior art, provide an electric toothbrush motor drive control circuit and electric toothbrush who effectively improves the drive precision to the motor.
The purpose of the utility model is realized through the following technical scheme:
an electric toothbrush motor drive control circuit comprising: an electric control circuit and a motor drive circuit; the electric control circuit comprises a control key, an electric controller and a first resistor, wherein the control key is connected with the input end of the electric controller and used for inputting electric control signals, the first end of the first resistor is used for being connected with the output end of a battery, and the second end of the first resistor is connected with the input end of the electric controller; the motor driving circuit comprises a motor driver, a second resistor, a third resistor, a fourth resistor and a fifth resistor, wherein a first driving output end of the electric controller is connected with a first end of the second resistor, a second end of the second resistor is connected with a first input end of the motor driver, a second end of the second resistor is grounded through the third resistor, a second driving output end of the electric controller is connected with a first end of the fourth resistor, a second end of the fourth resistor is connected with a second input end of the motor driver, a second end of the fourth resistor is grounded through the fifth resistor, the motor driver is used for carrying out differential operation processing on driving signals output by the electric controller, and an output end of the motor driver is used for being connected with an electric toothbrush motor so as to adjust the driving state of the electric toothbrush motor.
In one embodiment, the electric control circuit further includes a first capacitor, the output end of the battery is connected to the power supply end of the electric controller, the power supply end of the electric controller is connected to the first end of the first capacitor, and the second end of the first capacitor is grounded.
In one embodiment, the electric control circuit further comprises a second capacitor, a first end of the second capacitor is connected with a first end of the first capacitor, and a second end of the second capacitor is grounded.
In one embodiment, the capacitance value of the second capacitor is larger than that of the first capacitor.
In one embodiment, a resistance ratio of the second resistor to the third resistor is 0.08 to 0.13.
In one embodiment, a resistance ratio of the second resistor to the third resistor is 0.1.
In one embodiment, the electric toothbrush motor drive control circuit further comprises a wired charging circuit, the wired charging circuit comprises a charging manager and a sixth resistor, a power supply end of the charging manager is used for being connected with an external wired charging seat, the power supply end of the charging manager is further respectively connected with a charging detection end of the electric controller and a chip selection end of the charging manager, a first output end of the charging manager is connected with the battery, a first output end of the charging manager is further connected with a first end of the sixth resistor, a second end of the sixth resistor is connected with a second output end of the charging manager, and a second output end of the charging manager is further connected with a charging control end of the electric controller to control charging of the battery.
In one embodiment, the wired charging circuit further includes a battery protector and a seventh resistor, the charging detection terminal of the battery protector is connected to the external wired charging base, the charging control terminal of the battery protector is connected to the first terminal of the seventh resistor, and the second terminal of the seventh resistor is connected to the output terminal of the battery.
In one embodiment, the wired charging circuit further includes a third capacitor, the first output terminal of the charging manager is connected to the first terminal of the third capacitor, and the second terminal of the third capacitor is grounded.
An electric toothbrush comprising the electric toothbrush motor drive control circuit of any of the embodiments described above.
Compared with the prior art, the utility model discloses at least, following advantage has:
after the control button is pressed, the electric controller inputs motor driving signals into the motor driver respectively through the first driving output end and the second driving output end, the motor driver is convenient to carry out differential processing on the two motor driving signals, common errors between the two motor driving signals are mutually offset, the motor control signals output by the motor driver are more accurate, and the driving precision of the motor is effectively improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on these drawings without inventive efforts.
FIG. 1 is a circuit diagram of a drive control circuit for a motor of an electric toothbrush in accordance with one embodiment;
fig. 2 is a circuit diagram of an electric control circuit in the motor drive control circuit of the electric toothbrush shown in fig. 1.
FIG. 3 is a circuit diagram of a motor driving circuit in the motor driving control circuit of the electric toothbrush shown in FIG. 1;
fig. 4 is a circuit diagram of a wired charging circuit according to an embodiment.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The utility model relates to an electric toothbrush motor drive control circuit. In one embodiment, the electric toothbrush motor drive control circuit comprises an electric control circuit and a motor drive circuit. The electric control circuit comprises a control key, an electric controller and a first resistor. The control button is connected with the input end of the electric controller, the control button is used for inputting electric control signals, the first end of the first resistor is used for being connected with the output end of the battery, and the second end of the first resistor is connected with the input end of the electric controller. The motor driving circuit comprises a motor driver, a second resistor, a third resistor, a fourth resistor and a fifth resistor. And a first driving output end of the electric controller is connected with a first end of the second resistor, and a second end of the second resistor is connected with a first input end of the motor driver. The second end of the second resistor is grounded through the third resistor, the second driving output end of the electric controller is connected with the first end of the fourth resistor, the second end of the fourth resistor is connected with the second input end of the motor driver, and the second end of the fourth resistor is grounded through the fifth resistor. The motor driver is used for carrying out differential operation processing on the driving signals output by the electric controller, and the output end of the motor driver is used for being connected with the electric toothbrush motor so as to adjust the driving state of the electric toothbrush motor. After the control button is pressed, the electric controller inputs motor driving signals into the motor driver respectively through the first driving output end and the second driving output end, the motor driver is convenient to carry out differential processing on the two motor driving signals, common errors between the two motor driving signals are mutually offset, the motor control signals output by the motor driver are more accurate, and the driving precision of the motor is effectively improved.
Please refer to fig. 1, which is a circuit diagram of a driving control circuit of an electric toothbrush motor according to an embodiment of the present invention.
The electric toothbrush motor drive control circuit 10 of an embodiment includes an electric control circuit 100 and a motor drive circuit 200. Referring to fig. 2, the electric control circuit 100 includes a control button SW1, an electric controller U17, and a first resistor R9. The control key SW1 is connected with the input end of the electric controller U17, the control key SW1 is used for inputting electric control signals, the first end of the first resistor R9 is used for being connected with the output end of the battery, and the second end of the first resistor R9 is connected with the input end of the electric controller U17. Referring to fig. 3, the motor driving circuit 200 includes a motor driver U4, a second resistor R4, a third resistor R7, a fourth resistor R5, and a fifth resistor R6. The first driving output end of the electric controller U17 is connected to the first end of the second resistor R4, and the second end of the second resistor R4 is connected to the first input end of the motor driver U4. The second end of the second resistor R4 is grounded through the third resistor R7, the second driving output end of the electric controller U17 is connected with the first end of the fourth resistor R5, the second end of the fourth resistor R5 is connected with the second input end of the motor driver U4, and the second end of the fourth resistor R5 is grounded through the fifth resistor R6. The motor driver U4 is used for carrying out differential operation processing on the driving signal output by the electric controller U17, and the output end of the motor driver U4 is used for being connected with an electric toothbrush motor so as to adjust the driving state of the electric toothbrush motor.
In this embodiment, after the control key SW1 is pressed, the electric controller U17 inputs the motor driving signal to the motor driver U4 through the first driving output terminal and the second driving output terminal respectively, so that the motor driver U4 performs differential processing on the two motor driving signals, a common error between the two motor driving signals is offset, the motor control signal output by the motor driver U4 is more accurate, and the driving accuracy of the motor is effectively improved.
In one embodiment, referring to fig. 2, the electric control circuit 100 further includes a first capacitor C18, an output end of the battery is connected to a power supply end of the electric controller U17, the power supply end of the electric controller U17 is connected to a first end of the first capacitor C18, and a second end of the first capacitor C18 is grounded. In this embodiment, the first capacitor C18 is located on the power supply end of the electric controller U17, the battery supplies power for the electric controller U17 through the power supply end, and through the setting the first capacitor C18 makes the voltage output by the battery more stable, so that the working voltage of the electric controller U17 is more stable, and the normal operation of the electric controller U17 is ensured.
Further, referring to fig. 2, the electric control circuit 100 further includes a second capacitor C9, a first end of the second capacitor C9 is connected to a first end of the first capacitor C18, and a second end of the second capacitor C9 is grounded. In this embodiment, the second capacitor C9 is connected in parallel with the first capacitor C18, and the second capacitor C9 and the first capacitor C18 both have a filtering effect, and are a pair of multi-stage filtering processing is performed on the voltage output by the battery, so that noise interference signals of different frequencies in the voltage output by the battery are filtered out, and the stability of the working voltage of the electric controller U17 is further improved. In another embodiment, the capacitance of the second capacitor C9 is greater than the capacitance of the first capacitor C18, specifically, the second capacitor C9 is used for filtering low-frequency voltage signals in the voltage output by the battery, and the first capacitor C18 is used for filtering high-frequency voltage signals in the voltage output by the battery.
In one embodiment, the resistance ratio of the second resistor R4 to the third resistor R7 is 0.08 to 0.13. In this embodiment, the second resistor R4 and the third resistor R7 form a voltage divider circuit to step down the motor driving voltage input to the first input terminal of the motor driver U4, so that the driving voltage detected by the first input terminal of the motor driver U4 is reduced, and the situation that the voltage at the first input terminal of the motor driver U4 is too high and is damaged is avoided. Specifically, the resistance ratio of the second resistor R4 to the third resistor R7 is 0.1, that is, the ratio of the resistance of the second resistor R4 to the resistance of the third resistor R7 is 1, and in order to further ensure that the difference between the two driving voltages received by the motor driver U4 is reduced, the resistance ratio of the fourth resistor R5 to the fifth resistor R6 is also 0.1, so as to ensure that the input scaling multiples of the two driving voltages received by the motor driver U4 are the same.
In one embodiment, referring to fig. 4, the electric toothbrush motor driving control circuit 10 further includes a wired charging circuit 300, the wired charging circuit 300 includes a charging manager U5 and a sixth resistor R8, a power supply terminal of the charging manager U5 is configured to be connected to an external wired charging socket, the power supply terminal of the charging manager U5 is further connected to a charging detection terminal of the electric controller U17 and a chip selection terminal of the charging manager U5, a first output terminal of the charging manager U5 is connected to the battery, a first output terminal of the charging manager U5 is further connected to a first terminal of the sixth resistor R8, a second terminal of the sixth resistor R8 is connected to a second output terminal of the charging manager U5, and a second output terminal of the charging manager U5 is further connected to a charging control terminal of the electric controller U17, so as to control charging of the battery. In this embodiment, the power supply terminal of the charging manager U5 is configured to receive a wired charging signal, that is, during wired charging, start charging and discharging control of the battery by the charging manager U5. The charging detection terminal of the charging manager U5 is configured to detect a current voltage of the battery, so as to determine whether charging is required according to the current voltage of the battery. The first output end and the second output end of the charging manager U5 perform charging control on the battery, for example, when the charging detection end of the charging manager U5 detects that the voltage of the battery is too low, the second output end of the charging manager U5 receives a charging signal, so that the first output end of the charging manager U5 charges the battery. The sixth resistor R8 serves as a current limiting resistor.
Further, referring to fig. 4, the wired charging circuit 300 further includes a battery protector U2 and a seventh resistor R2, a charging detection end of the battery protector U2 is connected to the external wired charging base, a charging control end of the battery protector U2 is connected to a first end of the seventh resistor R2, and a second end of the seventh resistor R2 is connected to an output end of the battery. In this embodiment, the charging detection end of the battery protector U2 is used for detecting the charging current or voltage during the wired charging, so that when the charging current or voltage during the wired charging is too high, the charging control end of the battery protector U2 outputs an interrupt signal, so that it is right to interrupt the charging of the battery, and the charging of the battery is effectively protected. And the seventh resistor R2 is connected in series between the charging control end of the battery protector U2 and the battery to play a role in limiting current.
Still further, referring to fig. 4, the wired charging circuit 300 further includes a third capacitor C1, a first output terminal of the charging manager U5 is connected to a first terminal of the third capacitor C1, and a second terminal of the third capacitor C1 is grounded. In this embodiment, the first end of the third capacitor C1 is connected to the first output end of the charge manager U5, so that the third capacitor C1 performs filtering processing on the signal at the first output end of the charge manager U5, thereby making the charging signal of the battery more stable.
In one embodiment, the present application further provides an electric toothbrush comprising the electric toothbrush motor drive control circuit of any of the above embodiments. In this embodiment, the electric toothbrush motor drive control circuit includes an electric control circuit and a motor drive circuit. The electric control circuit comprises a control key, an electric controller and a first resistor. The control button is connected with the input end of the electric controller, the control button is used for inputting electric control signals, the first end of the first resistor is used for being connected with the output end of the battery, and the second end of the first resistor is connected with the input end of the electric controller. The motor driving circuit comprises a motor driver, a second resistor, a third resistor, a fourth resistor and a fifth resistor. And a first driving output end of the electric controller is connected with a first end of the second resistor, and a second end of the second resistor is connected with a first input end of the motor driver. The second end of the second resistor is grounded through the third resistor, the second driving output end of the electric controller is connected with the first end of the fourth resistor, the second end of the fourth resistor is connected with the second input end of the motor driver, and the second end of the fourth resistor is grounded through the fifth resistor. The motor driver is used for carrying out differential operation processing on the driving signals output by the electric controller, and the output end of the motor driver is used for being connected with the electric toothbrush motor so as to adjust the driving state of the electric toothbrush motor. After the control button is pressed, the electric controller inputs motor driving signals into the motor driver respectively through the first driving output end and the second driving output end, the motor driver is convenient to carry out differential processing on the two motor driving signals, common errors between the two motor driving signals are mutually offset, the motor control signals output by the motor driver are more accurate, and the driving precision of the motor is effectively improved.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. An electric toothbrush motor drive control circuit, comprising:
the electric control circuit comprises a control key, an electric controller and a first resistor, wherein the control key is connected with the input end of the electric controller and used for inputting an electric control signal, the first end of the first resistor is used for being connected with the output end of a battery, and the second end of the first resistor is connected with the input end of the electric controller;
the motor driving circuit comprises a motor driver, a second resistor, a third resistor, a fourth resistor and a fifth resistor, wherein a first driving output end of the electric controller is connected with a first end of the second resistor, a second end of the second resistor is connected with a first input end of the motor driver, a second end of the second resistor is grounded through the third resistor, a second driving output end of the electric controller is connected with a first end of the fourth resistor, a second end of the fourth resistor is connected with a second input end of the motor driver, a second end of the fourth resistor is grounded through the fifth resistor, the motor driver is used for carrying out differential operation processing on driving signals output by the electric controller, and an output end of the motor driver is used for being connected with an electric toothbrush motor to adjust the driving state of the electric toothbrush motor.
2. The electric toothbrush motor drive control circuit of claim 1, further comprising a first capacitor, wherein an output terminal of the battery is connected to a power supply terminal of the electric controller, the power supply terminal of the electric controller is connected to a first terminal of the first capacitor, and a second terminal of the first capacitor is grounded.
3. The electric toothbrush motor drive control circuit of claim 2, further comprising a second capacitor having a first terminal connected to the first terminal of the first capacitor and a second terminal connected to ground.
4. The electric toothbrush motor drive control circuit of claim 3, wherein a capacitance of the second capacitor is greater than a capacitance of the first capacitor.
5. The electric toothbrush motor drive control circuit according to claim 1, wherein a resistance ratio of the second resistor to the third resistor is 0.08 to 0.13.
6. The electric toothbrush motor drive control circuit of claim 5, wherein a resistance ratio of the second resistor to the third resistor is 0.1.
7. The electric toothbrush motor driving control circuit according to claim 1, further comprising a wired charging circuit, wherein the wired charging circuit comprises a charging manager and a sixth resistor, a power supply terminal of the charging manager is used for being connected to an external wired charging seat, the power supply terminal of the charging manager is further connected to the charging detection terminal of the electric controller and the chip selection terminal of the charging manager, a first output terminal of the charging manager is connected to the battery, a first output terminal of the charging manager is further connected to a first terminal of the sixth resistor, a second terminal of the sixth resistor is connected to a second output terminal of the charging manager, and a second output terminal of the charging manager is further connected to a charging control terminal of the electric controller to control charging of the battery.
8. The electric toothbrush motor drive control circuit of claim 7, wherein the wired charging circuit further comprises a battery protector and a seventh resistor, the charging detection terminal of the battery protector is connected to the external wired charging socket, the charging control terminal of the battery protector is connected to a first terminal of the seventh resistor, and a second terminal of the seventh resistor is connected to the output terminal of the battery.
9. The electric toothbrush motor drive control circuit of claim 7, wherein the wired charging circuit further comprises a third capacitor, the first output of the charge manager being connected to a first terminal of the third capacitor, a second terminal of the third capacitor being connected to ground.
10. An electric toothbrush comprising an electric toothbrush motor drive control circuit according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221854407.7U CN218888435U (en) | 2022-07-18 | 2022-07-18 | Electric toothbrush motor drive control circuit and electric toothbrush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221854407.7U CN218888435U (en) | 2022-07-18 | 2022-07-18 | Electric toothbrush motor drive control circuit and electric toothbrush |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218888435U true CN218888435U (en) | 2023-04-18 |
Family
ID=85951946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221854407.7U Active CN218888435U (en) | 2022-07-18 | 2022-07-18 | Electric toothbrush motor drive control circuit and electric toothbrush |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218888435U (en) |
-
2022
- 2022-07-18 CN CN202221854407.7U patent/CN218888435U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7471016B2 (en) | Low pass filter | |
| CN107167690B (en) | Device and method for detecting broken wire of battery pack voltage acquisition system | |
| CN112924884B (en) | Quantitative diagnosis method for short circuit in battery based on incremental capacity curve peak area | |
| CN104917220B (en) | switching circuit and motor energy recovery system | |
| CN103299504A (en) | Recharging device | |
| CN218888435U (en) | Electric toothbrush motor drive control circuit and electric toothbrush | |
| CN107625487A (en) | A kind of dust catcher of vacuum cleaner dust prompting device for full and the application device | |
| CN107885304B (en) | Voltage sudden change detection circuit | |
| CN209709702U (en) | A kind of charging control circuit, electronic equipment | |
| CN217643308U (en) | Encoder hardware filter circuit based on voltage comparator | |
| CN115459384A (en) | Wireless charging method of active capacitance pen, capacitance pen controller and capacitance pen | |
| CN211603459U (en) | Switch detection circuit and household equipment | |
| TWI301205B (en) | System for detecting electric power in battery and hand-held electronic apparatus thereof | |
| CN203289377U (en) | Frequency-conversion driving board and control-board interface circuit | |
| JPH11165298A (en) | Method deciding material quantity cut off by motor-driven type cutter and circuit device for executing the method | |
| CN207410013U (en) | Electric toothbrush | |
| CN221199899U (en) | Short circuit diagnosis circuit for motor interface | |
| CN112497206A (en) | Compensation control method of steering engine and steering engine compensation circuit | |
| CN205682764U (en) | A kind of novel toothbrush | |
| CN218470846U (en) | Voltage detection circuit for battery management device | |
| CN217716276U (en) | Position signal redundancy detection circuit and vehicle with same | |
| CN210090549U (en) | Overcurrent detection circuit | |
| CN217334191U (en) | Intelligent lithium battery pack and electric tool | |
| CN111856331A (en) | Method and device for detecting open circuit fault of charging circuit of vehicle and vehicle | |
| CN217851380U (en) | Charging key detection circuit and electronic cigarette |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |