CN209207573U - The control circuit of electric shaver - Google Patents
The control circuit of electric shaver Download PDFInfo
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- CN209207573U CN209207573U CN201821713036.4U CN201821713036U CN209207573U CN 209207573 U CN209207573 U CN 209207573U CN 201821713036 U CN201821713036 U CN 201821713036U CN 209207573 U CN209207573 U CN 209207573U
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Abstract
The utility model discloses a kind of control circuits of electric shaver, including charge control module, battery, motor control module, main control chip and switch module, charge control module includes metal-oxide-semiconductor one, triode and multiple divider resistances one, the drain electrode of metal-oxide-semiconductor one is voltage output end and is electrically connected with the battery, the grid of metal-oxide-semiconductor one and the collector of triode are electrically connected, multiple divider resistances one are electrically connected between the source electrode of metal-oxide-semiconductor one and the base stage of triode, the source electrode of metal-oxide-semiconductor one is voltage input end, and the emitter of triode is grounded；Battery and motor control module are electrically connected；Main control chip is electrically connected with the battery；The base stage of main control chip and motor control module and triode is electrically connected；Switch module and main control chip are electrically connected.The utility model is realized when battery capacity discharges to efficiently charging battery, so that main control chip is reached operating voltage, and realize battery short circuit defencive function.
Description
Technical field
The utility model relates to a kind of control circuits of electric shaver.
Background technique
The control circuit of electric shaver currently on the market includes battery charging module, additives for overcharge protection module, electricity
Tank discharge module, over, load overload protection module and motor rotation blockage protective module.In the prior art, battery fills
It is provided in electric module between metal-oxide-semiconductor one and the source electrode and drain electrode of metal-oxide-semiconductor one and is connected with supplying resistance, battery is filled in realization
Electricity Functional.In the actual use process, it when using the product of the control circuit to shelve for a long time, after battery capacity discharges, inserts
Upper adapter can bring back to life in a relatively short period of time battery and charge normal to battery.However, when cell voltage is lower than control circuit
In main control chip operating voltage when, main control chip not can control battery charging module, since the resistance value of supplying resistance is more difficult
It chooses, causes the charging voltage of battery that can not draw high, can not be brought back to life so as to cause battery, therefore there is improved spaces.
Utility model content
In view of the deficiencies of the prior art, the utility model provides a kind of control circuit of electric shaver, when battery electricity
It when amount discharges, realizes to efficiently charging battery, so that main control chip is reached operating voltage, and realize battery short circuit defencive function.
To achieve the above object, the utility model provides following technical solution:
A kind of control circuit of electric shaver, including charge control module, battery, motor control module, main control chip
And switch module, the charge control module include metal-oxide-semiconductor one, triode and multiple divider resistances one, the leakage of the metal-oxide-semiconductor one
Extremely voltage output end and it is electrically connected with the battery, to charge to battery, the grid of the metal-oxide-semiconductor one and the current collection of triode
Pole is electrically connected, and multiple divider resistances one are electrically connected between the source electrode of metal-oxide-semiconductor one and the base stage of triode, and
Ground connection, the source electrode of the metal-oxide-semiconductor one are voltage input end, and the emitter of the triode is grounded；The battery and motor control
Module is electrically connected, to power to motor control module；The main control chip is electrically connected with the battery, to receive the power supply of battery
And detect cell voltage；The base stage of the main control chip and motor control module and triode is electrically connected, to drive electricity
The on-off of machine operating and metal-oxide-semiconductor one；The switch module and main control chip are electrically connected, and are controlled electric in motor control module
The operation or stopping of machine.
It preferably, further include having battery protection chip, the battery protection chip is electrically connected at the cathode of battery.
It preferably, further include thering is protection chip to bring back to life module, the protection chip brings back to life module and is electrically connected at battery
Cathode, and be arranged in parallel with battery protection chip.
It preferably, further include having charge prompting light emitting diode, the anode of the charge prompting light emitting diode electrically connects
It is connected to battery, cathode is electrically connected at main control chip.
Preferably, there is thermistor, the both ends of the thermistor are electrical with main control chip in the switch module
Connection, and wherein one end ground connection of thermistor.
Preferably, the motor control module includes motor, metal-oxide-semiconductor two and multiple divider resistances two, and the motor is just
The anode of pole and battery is electrically connected, and the drain electrode of the cathode and metal-oxide-semiconductor two of motor is electrically connected, and the cathode of motor passes through one
Divider resistance two and main control chip are electrically connected, and the grid of metal-oxide-semiconductor is electrically connected by a divider resistance two with main control chip,
The source electrode of metal-oxide-semiconductor two is grounded.
The advantages of the utility model are as follows: when main control chip can not work normally, divider resistance one and triode are played
The effect for switching metal-oxide-semiconductor one, that is, when plugging adapter, metal-oxide-semiconductor one is opened in divider resistance one and triode cooperation, realizes battery
Charging；After cell voltage reaches the operating voltage of main control chip, main control chip is worked normally, at this time by the control of main control chip
The on-off of metal-oxide-semiconductor one, to efficiently charging battery and the main control chip that can not work normally be made to reach normal working voltage；
On the other hand, the voltage that main control chip can export battery detects, to control the on-off and motor of charge control module
Operation, play the role of protection to entire control circuit.
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 control circuit of the Fig. 1 to the utility model electric shaver.
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 one, 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 one 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 one 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 one 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 and multiple partial pressures electricity
Resistance two, the anode of the motor are electrically connected with the anode of battery, and the drain electrode of the cathode and two Q3 of metal-oxide-semiconductor of motor is electrically connected,
And the cathode of motor is electrically connected by two R12 of a divider resistance and main control chip, is parallel with diode D2 and electricity on motor
Hold C3, the grid of two Q3 of metal-oxide-semiconductor is electrically connected by two R11 of a divider resistance and main control chip, while passing through a divider resistance
Two R10 ground connection, the source electrode ground connection of two Q3 of metal-oxide-semiconductor.Main control chip is enabled to directly to adopt the voltage of battery under the setting
Collection, saves the use of sample resistance, and improve the accuracy of battery voltage acquisition.
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 (6)
1. a kind of control circuit of electric shaver, including charge control module, battery, motor control module, main control chip and
Switch module, it is characterized in that:
The charge control module includes metal-oxide-semiconductor one, triode and multiple divider resistances one, and the drain electrode of the metal-oxide-semiconductor one is electricity
It presses output end and is electrically connected with the battery, to charge to battery, the grid of the metal-oxide-semiconductor one and the collector of triode are electrical
Connection, multiple divider resistances one are electrically connected between the source electrode of metal-oxide-semiconductor one and the base stage of triode, and are grounded,
The source electrode of the metal-oxide-semiconductor one is voltage input end, and the emitter of the triode is grounded；
The battery and motor control module are electrically connected, to power to motor control module；
The main control chip is electrically connected with the battery, to receive the power supply of battery and detect cell voltage；
The base stage of the main control chip and motor control module and triode is electrically connected, with driving motor operating and MOS
The on-off of pipe one；
The switch module and main control chip are electrically connected, and control the operation or stopping of motor in motor control module.
2. the control circuit of electric shaver according to claim 1, it is characterized in that: further include having battery protection chip,
The battery protection chip is electrically connected at the cathode of battery.
3. the control circuit of electric shaver according to claim 2, it is characterized in that: further including thering is protection chip to bring back to life mould
Block, the protection chip brings back to life module and is electrically connected at the cathode of battery, and is arranged in parallel with battery protection chip.
4. the control circuit of electric shaver according to claim 1, it is characterized in that: further including having charge prompting luminous two
The anode of pole pipe, the charge prompting light emitting diode is electrically connected at battery, and cathode is electrically connected at main control chip.
5. the control circuit of electric shaver according to claim 1, it is characterized in that: having temperature-sensitive in the switch module
Resistance, the both ends of the thermistor are electrically connected with main control chip, and wherein one end ground connection of thermistor.
6. the control circuit of electric shaver according to claim 1, it is characterized in that: the motor control module includes electricity
Machine, metal-oxide-semiconductor two and multiple divider resistances two, the anode of the motor are electrically connected with the anode of battery, the cathode and MOS of motor
The drain electrode of pipe two is electrically connected, and the cathode of motor is electrically connected by a divider resistance two with main control chip, the grid of metal-oxide-semiconductor
Pole is electrically connected by a divider resistance two with main control chip, the source electrode ground connection of metal-oxide-semiconductor two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821713036.4U CN209207573U (en) | 2018-10-22 | 2018-10-22 | The control circuit of electric shaver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821713036.4U CN209207573U (en) | 2018-10-22 | 2018-10-22 | The control circuit of electric shaver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209207573U true CN209207573U (en) | 2019-08-06 |
Family
ID=67456524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821713036.4U Active CN209207573U (en) | 2018-10-22 | 2018-10-22 | The control circuit of electric shaver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209207573U (en) |
-
2018
- 2018-10-22 CN CN201821713036.4U patent/CN209207573U/en active Active
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