CN208888619U - The motor control module of shaver control circuit - Google Patents
The motor control module of shaver control circuit Download PDFInfo
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- CN208888619U CN208888619U CN201821713032.6U CN201821713032U CN208888619U CN 208888619 U CN208888619 U CN 208888619U CN 201821713032 U CN201821713032 U CN 201821713032U CN 208888619 U CN208888619 U CN 208888619U
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- motor
- divider resistance
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- oxide
- metal
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Abstract
The utility model discloses a kind of motor control modules of shaver control circuit, including motor, main control chip, metal-oxide-semiconductor two, divider resistance one, divider resistance two and divider resistance three；The drain electrode of the metal-oxide-semiconductor two and the cathode of motor are electrically connected, and the source electrode ground connection of metal-oxide-semiconductor two and the grid of metal-oxide-semiconductor two are electrically connected by divider resistance one and main control chip, and are grounded by divider resistance two；The main control chip is electrically connected by the cathode of divider resistance three and motor, to acquire the voltage of motor, and controls the operation of motor.The utility model can facilitate to electric moter voltage and save the use of sample resistance, to save the cost of control circuit.
Description
Technical field
The utility model relates to a kind of motor control modules of shaver control circuit.
Background technique
Motor control module is provided in the control circuit of electric shaver currently on the market.In the prior art, it is
To the stability contorting of motor, the current acquisition list being made of multiple sample resistances can be set in electric motor control module
Member causes circuit complex, meanwhile, the higher cost of sample resistance leads to the higher cost of integrated circuit, therefore there is
Improved space.
Utility model content
In view of the deficiencies of the prior art, the utility model provides a kind of motor control module of shaver control circuit,
It can facilitate to electric moter voltage and save the use of sample resistance, to save the cost of control circuit.
To achieve the above object, the utility model provides following technical solution:
A kind of motor control module of shaver control circuit, including motor, main control chip, metal-oxide-semiconductor two, divider resistance
One, divider resistance two and divider resistance three；
The drain electrode of the metal-oxide-semiconductor two and the cathode of motor are electrically connected, the source electrode ground connection of metal-oxide-semiconductor two and the grid of metal-oxide-semiconductor two
It is electrically connected by divider resistance one and main control chip, and is grounded by divider resistance two；
The main control chip is electrically connected by the cathode of divider resistance three and motor, to acquire the voltage of motor, and controls electricity
The operation of machine.
Preferably, capacitor one is parallel on the motor.
Preferably, diode is parallel on the motor.
Preferably, it is provided with capacitor two between the divider resistance three and main control chip, and is grounded by capacitor two.
The advantages of the utility model are as follows: main control chip can directly collect motor in actual work by divider resistance three
Voltage, and the voltage of the acquisition is compared with main control chip internal reference voltage, control signal is exported to motor, thus surely
Determine the voltage of motor, and stablizes the function of motor speed；On the other hand the voltage of motor, circuit are acquired by divider resistance three
Simply, and acquisition is convenient.
Detailed description of the invention
Fig. 1 is the schematic diagram of the control circuit of electric shaver provided by the present embodiment.
Specific embodiment
It is further described in conjunction with motor control module of the Fig. 1 to the utility model shaver control circuit.
A kind of control circuit of electric shaver, including charge control module 1, battery BAT, motor control module 2, master control
Chip and switch module 6.
The charge control module includes one Q1 of metal-oxide-semiconductor, triode Q2 and multiple divider resistances four, one Q1 of metal-oxide-semiconductor
Drain electrode be voltage output end and to be electrically connected with the battery, to charge to battery, the grid and triode of one Q1 of metal-oxide-semiconductor
The collector of Q2 is electrically connected, and there are four the tools of divider resistance four and respectively R1, R2, R3 and R6, i.e. R1, R2 and R6 successively go here and there
Connection, and be electrically connected between the source electrode of one Q1 of metal-oxide-semiconductor and the base stage of triode Q2, one end of R3 is electrically connected at R2 and R6
Between, other end ground connection；The source electrode of one Q1 of metal-oxide-semiconductor is voltage input end, for connecting adapter, the triode Q2's
Emitter ground connection；The battery and motor control module are electrically connected, to power to motor control module；The main control chip with
Battery is electrically connected, to receive the power supply of battery and detect cell voltage；The main control chip and motor control module and
The base stage of triode Q2 is electrically connected, with driving motor M operating and the on-off of one Q1 of metal-oxide-semiconductor；The switch module and master control
Chip is electrically connected, and controls the operation or stopping of motor M in motor control module.In the present embodiment, in the charge state when,
The voltage that main control chip receives battery is abnormal, i.e., when short-circuit, control charge control module is disconnected, and stops charging to battery,
Realize the defencive function to battery；When main control chip can not work normally, divider resistance four R1, R2, R3 and R6 and three poles
Pipe Q2 plays the role of switching one Q1 of metal-oxide-semiconductor, that is, when plugging adapter, multiple divider resistances four and triode Q2 cooperation are opened
One Q1 of metal-oxide-semiconductor, realizes the charging of battery, and after cell voltage reaches the operating voltage of main control chip, main control chip is worked normally,
At this time by the on-off of control one Q1 of metal-oxide-semiconductor of main control chip, to efficiently charging battery and make the master that can not work normally
Control chip reaches normal working voltage.
The present embodiment is further arranged to: further including having battery protection chip, the battery protection chip is electrically connected at
The cathode of battery, and be grounded.The battery protection chip can play overshoot protection, Cross prevention and overcurrent, mistake to battery
Short protection.
The present embodiment is further arranged to: further including having protection chip to bring back to life module 3, the protection chip brings back to life module electricity
Property is connected to the cathode of battery, and is arranged in parallel with battery protection chip.It includes triode Q4 that the protection chip, which brings back to life module,
The base stage of triode Q4 is electrically connected at the cathode of battery by a resistance R19, and collector is electrically connected by a resistance R14
In the cathode of battery, emitter ground connection, and a resistance R18 is electrically connected between the emitter and base stage of triode Q4.?
In the actual application of battery protection chip, there are a certain proportion of battery protection chip because electrostatic or circuit leakage current make electricity
Cell voltage is turned off lower than 2.5V, battery protection chip opening can not be prevented to cause battery from normally filling even if plugging adapter
Electricity, therefore the setting of protection chip resurrection module can provide the electric current of 30mA or so when battery protection chip is fully disconnected
It charges the battery, cell voltage is allowed to reach 2.5V or more, battery protection chip turn on automatically battery, into normal operating conditions.
The present embodiment is further arranged to: it further include having charge prompting light emitting diode 4, the charge prompting light-emitting diodes
The anode of pipe is electrically connected at battery, and cathode is electrically connected at the pin of main control chip.Charge prompting luminous two in the present embodiment
There are two LED1, LED2 for pole pipe tool, and are arranged in parallel, and two light emitting diodes are respectively used to charge prompting and charging complete
Prompt.
The present embodiment is further arranged to: having thermistor Rt, the both ends of the thermistor in the switch module
It is electrically connected with the pin of main control chip, and wherein one end ground connection of thermistor.When thermistor Rt short circuit or open
Lu Shi, main control chip detects that cell voltage is abnormal, charge control module is turned off, and plays a protective role to battery.
The present embodiment is further arranged to, and the motor control module includes motor M, two Q3 of metal-oxide-semiconductor, divider resistance one
Three R12 of R11, two R10 of divider resistance and divider resistance, the anode of the motor are electrically connected with the anode of battery, and motor is born
The drain electrode of pole and two Q3 of metal-oxide-semiconductor are electrically connected, and the cathode of motor is electrically connected by three R12 of divider resistance with main control chip
It connects, makes voltage when master control chip acquisition motor work, be parallel with one C3 of diode D2 and capacitor, two Q3 of metal-oxide-semiconductor on motor
Grid be electrically connected by one R11 of divider resistance and main control chip, while being grounded by two R10 of divider resistance, two Q3 of metal-oxide-semiconductor
Source electrode ground connection.Main control chip is enabled to directly to acquire the voltage of battery under the setting, and by the voltage of the acquisition
It is compared with main control chip internal reference voltage, exports control signal to motor, to stablize the voltage of motor, and stablized
The function of motor speed saves the use of sample resistance, and improves the accuracy of battery voltage acquisition, simplicity.
The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited merely to
Above-described embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should refer to
Out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and
Retouching, these improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (4)
1. a kind of motor control module of shaver control circuit, it is characterized in that: including motor, main control chip, metal-oxide-semiconductor two, dividing
Piezoresistance one, divider resistance two and divider resistance three；
The drain electrode of the metal-oxide-semiconductor two and the cathode of motor are electrically connected, the source electrode ground connection of metal-oxide-semiconductor two and the grid of metal-oxide-semiconductor two
It is electrically connected by divider resistance one and main control chip, and is grounded by divider resistance two；
The main control chip is electrically connected by the cathode of divider resistance three and motor, to acquire the voltage of motor, and controls electricity
The operation of machine.
2. the motor control module of shaver control circuit according to claim 1, it is characterized in that: in parallel on the motor
There is capacitor one.
3. the motor control module of shaver control circuit according to claim 1, it is characterized in that: in parallel on the motor
There is diode.
4. the motor control module of shaver control circuit according to claim 1, it is characterized in that: the divider resistance three
It is provided with capacitor two between main control chip, and is grounded by capacitor two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821713032.6U CN208888619U (en) | 2018-10-22 | 2018-10-22 | The motor control module of shaver control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821713032.6U CN208888619U (en) | 2018-10-22 | 2018-10-22 | The motor control module of shaver control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208888619U true CN208888619U (en) | 2019-05-21 |
Family
ID=66516775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821713032.6U Active CN208888619U (en) | 2018-10-22 | 2018-10-22 | The motor control module of shaver control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208888619U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109343399A (en) * | 2018-10-22 | 2019-02-15 | 浙江亚尚智能科技有限公司 | The motor control module of shaver control circuit |
-
2018
- 2018-10-22 CN CN201821713032.6U patent/CN208888619U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109343399A (en) * | 2018-10-22 | 2019-02-15 | 浙江亚尚智能科技有限公司 | The motor control module of shaver control circuit |
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