CN109873466A - A kind of Mini-lighting equipment control circuit and miniature explosion-proof flashlight - Google Patents
A kind of Mini-lighting equipment control circuit and miniature explosion-proof flashlight Download PDFInfo
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- CN109873466A CN109873466A CN201711265510.1A CN201711265510A CN109873466A CN 109873466 A CN109873466 A CN 109873466A CN 201711265510 A CN201711265510 A CN 201711265510A CN 109873466 A CN109873466 A CN 109873466A
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Abstract
The present invention is suitable for electronic field, and providing a kind of Mini-lighting equipment control circuit and miniature explosion-proof flashlight, the circuit includes: charhing unit, and for controlling battery charging, the charhing unit is directly connected to USB interface or connects USB interface by data line；Electricity display unit, for showing current electric quantity；Switch unit, for generating driving signal by electricity display unit described in switch control；LED drive unit, for driving LED to shine according to the driving signal.The functional modules such as the present invention is integrated with LED driving, electricity is shown, USB charges have the function of multipurpose, charging convenience, the electricity that can display real-time battery etc., facilitate the real-time display of client's charging and electricity.
Description
Technical field
The invention belongs to electronic field more particularly to a kind of Mini-lighting equipment control circuit and miniature explosion-proof flashlights.
Background technique
Current small-sized, Mini flash light charging circuit and electric quantity display circuit not in main body mostly, so as to cause
Mini flash light must use dedicated charger, can not dock with phone charger, charger baby etc. and realize charge function, charging ten
Divide inconvenience；In addition, due to being not provided with electric quantity display circuit, so as to cause can not real-time display lamps and lanterns electricity, Ke Huwu
Method determines whether to charge according to the real time electrical quantity of lamps and lanterns, if needs replacing battery.
Summary of the invention
The embodiment of the present invention is designed to provide a kind of Mini-lighting equipment control circuit, it is intended to solve existing Mini flash light
Special charging equipment must be used to cause charging inconvenient, and can not real-time display lamps and lanterns electricity the problem of.
The embodiments of the present invention are implemented as follows, and a kind of Mini-lighting equipment control circuit is connect with battery, the circuit packet
It includes:
Charhing unit, for controlling battery charging, the charhing unit is directly connected to USB interface or is connected by data line
The charging output end of USB interface, the charhing unit is connect with the charging end of the battery；
Electricity display unit, for showing current electric quantity, the electricity display control end of the electricity display unit with it is described
The display output end of charhing unit connects, and the power end of the electricity display unit is connect with the charging end of the battery；
Switch unit, for generating driving signal by electricity display unit described in switch control, the switch unit
Output end is connect with the switch control terminal of the electricity display unit；
LED drive unit, for according to the driving signal drive LED shine, the control terminal of the LED drive unit with
The driving end of the electricity display unit connects, and the power end of the LED drive unit is connect with the charging end of the battery.
The another object of the embodiment of the present invention is, provides a kind of miniature explosion-proof flashlight, the miniature explosion-proof flashlight
Including lamp body cylinder, above-mentioned Mini-lighting equipment control circuit is equipped with inside the lamp body cylinder, one end of the lamp body cylinder is equipped with lamp cap
Cylinder, the other end of the lamp body cylinder are equipped with tail-hood, and the end cross-sectional of the lamp cap cylinder is equipped with the Transparent Parts of a transmission light, described
The Transparent Parts are fixedly connected by lamp cap pressure ring with the lamp cap cylinder, and the surface of the lamp body cylinder also leaks outside and has the USB interface,
And the USB interface top plug is stamped USB plug, and the USB plug is connect with the surface of the lamp body cylinder, the table of the lamp body cylinder
Face is additionally provided with one for showing that the electricity display window of battery capacity, the tail-hood are equipped with one for lamps and lanterns light and electricity
Show the switch block switched.
The functional modules such as the embodiment of the present invention is integrated with LED driving, electricity is shown, USB charges, have multipurpose, charging
The functions such as convenient, to can display real-time battery electricity facilitate the real-time display of client's charging and electricity；There is battery wink simultaneously
Between power off and keep lamps and lanterns and electricity to show not and extinguish, while avoiding lamps and lanterns and tapping, the lamps and lanterns under abnormal conditions such as fall
Extinguish, increases product function and stability.
Detailed description of the invention
Fig. 1 is the structure chart of Mini-lighting equipment control circuit provided in an embodiment of the present invention；
Fig. 2 is the exemplary circuit figure of charhing unit in Mini-lighting equipment control circuit provided in an embodiment of the present invention；
Fig. 3 is the exemplary circuit figure of electricity display unit in Mini-lighting equipment control circuit provided in an embodiment of the present invention；
Fig. 4 is the exemplary circuit figure of LED drive unit in Mini-lighting equipment control circuit provided in an embodiment of the present invention；
Fig. 5 is the structure chart of miniature explosion-proof flashlight provided in an embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
Not constituting a conflict with each other can be combined with each other.
The functional modules such as the embodiment of the present invention is integrated with LED driving, electricity is shown, USB charges, have multipurpose, charging
The functions such as convenient, to can display real-time battery electricity facilitate the real-time display of client's charging and electricity.
The structure that Fig. 1 shows Mini-lighting equipment control circuit provided in an embodiment of the present invention is only shown for ease of description
Part related to the present invention.
As an embodiment of the present invention, which can be applied in various small-sized, Mini flash lights,
It is particularly suitable in miniature explosion-proof flashlight, which connect with battery, comprising:
Charhing unit 11, for controlling battery charging, charhing unit 11 is directly connected to USB interface or is connected by data line
USB interface, the charging output end of charhing unit 11 and the charging end of battery connect；
In embodiments of the present invention, Mini-lighting equipment control circuit includes charhing unit 11, and on charhing unit 11
It is directly connected to a USB interface, or a USB interface is connected by data line, to realize and phone charger, charger baby
Charge function is realized in equal docking, is charged without dedicated charging equipment, and the compatible and convenient of charging is enhanced
Property.
Electricity display unit 12, for showing current electric quantity, the electricity display control end of electricity display unit 12 and charging
The display output end of unit 11 connects, and the power end of electricity display unit 12 and the charging end of battery connect；
In embodiments of the present invention, battery current electric quantity can be displayed in real time by the way that electricity display unit 12 is arranged, from
And family can be used and clearly judge that whether lamps and lanterns need to charge or replace battery, greatly increase according to the real time electrical quantity of lamps and lanterns
The strong ease for use and functionality of product.
Switch unit 13, for by switch control electricity display unit 12 generate driving signal, switch unit 13 it is defeated
Outlet is connect with the switch control terminal of electricity display unit 12；
Specifically, switch unit 13 can be key switch, by touching switch, toggle switch or inductive switch；
Wherein, key switch, by a conduction terminal of touching switch, toggle switch or inductive switch be switch unit 13 output
End, key switch are grounded by another conduction terminal of touching switch, toggle switch, rotating switch or inductive switch.
LED drive unit 14, for driving LED to shine according to driving signal, the control terminal and electricity of LED drive unit 14
The driving end of display unit 12 connects, and the power end of LED drive unit 14 and the charging end of battery connect.
The functional modules such as the embodiment of the present invention is integrated with LED driving, electricity is shown, USB charges, have multipurpose, charging
The functions such as convenient, to can display real-time battery electricity facilitate the real-time display of client's charging and electricity.
Fig. 2 shows the exemplary circuit structure of charhing unit in Mini-lighting equipment control circuit provided in an embodiment of the present invention,
For ease of description, only the parts related to the present invention are shown.
As an embodiment of the present invention, charhing unit 11 includes:
Resistance R10, capacitor C4, capacitor C5, diode D2, diode D3 and power supply chip U4；
The anode of diode D2, the cathode of diode D3 are correspondingly connected with USB interface respectively, the cathode of diode D2 be
Supply voltage of uniting connects, and the cathode of diode D2 also passes through capacitor C4 and is grounded, the plus earth of diode D3, power supply chip U4's
Chip beginning energy input terminal (8 foot) connects system power source voltage, battery temperature test side (1 foot) ground connection of power supply chip U4, power supply
The constant-current charge electric current of chip U4, which is arranged, to be connected between charging current monitoring side (2 foot) and power supply ground terminal (3 foot) by resistance R10
It connects, the battery terminal connections (5 foot) of power supply chip U4 are that the charging output end of charhing unit 11 is grounded by capacitor C5, power supply chip
The battery charging complete indication end (6 foot) of U4 and the charged state indication end (7 foot) of open-drain output are respectively charhing unit
The input voltage positive input terminal (4 foot) of 11 two display output ends, power supply chip U4 connects supply voltage.
Preferably, power supply chip U4 is PT4057 type constant current charging chip.
Wherein, 1 foot be battery temperature detect pin (TEMP), if the voltage of TEMP pin be less than input voltage 45% or
Person is greater than the 80% of input voltage, it is meant that battery temperature is too low or excessively high, then charging is suspended.If TEMP directly meets GND,
Battery temperature detection function is cancelled, other charge functions are normal；
2 feet are that the setting of constant-current charge electric current and charging current monitor pin (PROG), connect an outside from PROG pin
Resistance can be programmed charging current to ground terminal.0.1V is modulated in the voltage of pre-charging stage, this pin；In constant current
The voltage of charging stage, this pin are fixed on 1V；
3 feet are power ground pin；
4 feet are input voltage positive input pin (Vcc), and the voltage of Vcc pin is the working power of internal circuit；Work as Vcc
When the voltage difference of pin and BAT pin is less than 30mV, LY5056 will enter the shutdown mode of low-power consumption, at this time the electricity of BAT pin
Stream is less than 2uA；
5 feet be battery connect pin (BAT), the anode of battery is connected to BAT pin, chip be prohibited work or
The leakage current of sleep pattern, BAT pin is less than 2uA；BAT pin provides the limitation voltage pipe of charging current and 4.2V to battery
Foot；
6 feet are that battery charging complete indicates pin (STDBY), and when battery charging complete, STDBY pin is by internal switch
Low level is drawn, indicates charging complete；In addition to this, STDBY pin will be in high-impedance state；
7 feet are that the charged state of open-drain output indicates pin (CHRG), when charger charges to battery, CHRG pipe
Foot is drawn by internal switch to low level, indicates that charging is carrying out；Otherwise CHRG pin is in high-impedance state；
8 feet are chip beginning energy input pin (CE), and CE pin input high level then makes PT4057 type constant current charging core
Piece is in normal operating conditions；CE pin input low level is then in LY5056 and is prohibited charged state；CE pin can be by
Transistor-Transistor Logic level or the driving of CMOS level.
In embodiments of the present invention, charhing unit 11 is preferably built using PT4057 type constant current charging chip, should
PT4057 type constant current charging chip is a complete single-cell lithium-ion battery charged pool positive and negative anodes reverse connecting protection using permanent
The power supply chip of constant-current charge, since PT4057 type constant current charging chip uses internal PMOSFET framework, in addition anti-
Circuit is overcharged, so not needing external sense resistor and isolating diode.Charging current can be adjusted in Thermal feedback, so as to
Chip temperature is limited under the conditions of high-power operation or high environment temperature.Charging voltage is fixed on 4.2V, and it is electric to charge
Stream can carry out external setting by a resistance R10.When charging current is down to setting value 1/ after reaching final float charge voltage
When 10, PT4057 type constant current charging chip will terminate charging cycle automatically.When input voltage is taken away, PT4057 type is permanent
Battery leakage current is down to 2uA or less automatically into a low current condition by constant-current charge chip.
PT4057 type constant current charging chip can also be placed in shutdown mode, so that supply current is down to 40uA.
Other features of PT4057 type constant current charging chip include charging current monitor, undervoltage lockout, recharge and two automatically
It is a to be used to indicate the status pin that charging terminates and input voltage accesses.
7 feet and 6 feet export two signals G, R to electricity display unit, and when charging, display module can display real-time battery
Electricity, it is preferable that the display mode of Light-emitting diode LED 1-LED4 is the mode of " horse race lamp ", so as to so as to show more
Clearly.
The functional modules such as the embodiment of the present invention is integrated with LED driving, electricity is shown, USB charges, have multipurpose, charging
The functions such as convenient, to can display real-time battery electricity facilitate the real-time display of client's charging and electricity.
Fig. 3 shows the exemplary circuit knot of electricity display unit in Mini-lighting equipment control circuit provided in an embodiment of the present invention
Structure, for ease of description, only the parts related to the present invention are shown.
As an embodiment of the present invention, electricity display unit 12 includes:
Resistance R1, resistance R2, resistance R8, resistance R15, capacitor C1, capacitor C2, capacitor C7, capacitor C8, capacitor C9, pressure stabilizing
Pipe, display module 121 and driving master chip U1；
One end of resistance R1 is the power end of electricity display unit 12, the other end of resistance R1 while one end with resistance R2
It is connected with one end of capacitor C2, the other end (V-) ground connection of resistance R2, the other end ground connection of capacitor C2, one end of capacitor C2
(VAD1) it is also connect with the voltage detection terminal (13 foot) of driving master chip U1, one end of capacitor C7 is simultaneously electricity display unit 12
Power end connect with the power input (1 foot) of driving master chip U1, the other end of capacitor C7 ground connection drives master chip U1's
Power input (1 foot) is also connect with one end of resistance R15, and the other end (S1) of resistance R15 is simultaneously with driving master chip U1's
Electricity display control end (4 foot) is connected with one end of capacitor C8, and the other end ground connection of capacitor C8, capacitor C9 is in parallel with capacitor C8,
Drive the electricity display control end (4 foot) of master chip U1 for the switch control terminal of electricity display unit 12, driving master chip U1's
Two chargings test side (2 feet, 3 feet) are respectively that two electricity display control ends of electricity display unit 12 are correspondingly connected with PT4057 type
7 feet, 6 feet of constant current charging chip drive driving power supply control end (5 foot), the duty ratio output end (6 foot) of master chip U1
Respectively two driving ends of electricity display unit 12 drive the power input (1 foot) and ground terminal (14 foot) of master chip U1
Between connected by capacitor C1, driving master chip U1 ground terminal (14 foot) ground connection, drive master chip U1 multiple driving electricity
Display end (7 feet, 10 feet, 11 feet, 12 feet) respectively with multiple driving ends (LED4, LED3, LED2, LED1) of display module 121
It is correspondingly connected with, drives the under-voltage protection side (9 foot) of master chip U1 to connect simultaneously with one end of the anode of voltage-stabiliser tube and resistance R8, electricity
Hinder the voltage output end (8 foot) of the other end connection driving master chip U1 of R8, the plus earth of voltage-stabiliser tube, the common end of voltage-stabiliser tube
It is connect with one end of resistance R8.
Preferably, driving master chip U1 is SN2702 type switch control single-chip microcontroller.
As a preferred embodiment of the present invention, display module 121 includes:
Resistance R3, resistance R6, resistance R7, resistance R9 and Light-emitting diode LED 1, Light-emitting diode LED 2, luminous two
Pole pipe LED3, Light-emitting diode LED 4；
Resistance R3, resistance R6, resistance R7, resistance R9 one end be respectively four driving ends of display module 121, resistance
R3, resistance R6, resistance R7, resistance R9 one end respectively with Light-emitting diode LED 1, Light-emitting diode LED 2, light emitting diode
The anode connection of LED3, Light-emitting diode LED 4, Light-emitting diode LED 2, Light-emitting diode LED 3, Light-emitting diode LED 4
Cathode is grounded simultaneously.
In embodiments of the present invention, electricity display unit 12 is preferably controlled using SN2702 type switch control single-chip microcontroller
Show the real time electrical quantity of battery.The voltage of battery charging terminal BT+ is powered by 1 foot to SN2702 type switch control single-chip microcontroller,
Function is as follows:
1) voltage for, detecting battery BT+, by program setting, according to the letter of voltage output LED1, LED2, LED3, LED4
Number level, when battery capacity is 75% -100%, LED1, LED2, LED3, LED4 are high level, drive four
LED1-LED4 shines；When electricity is 50% -75%, LED1, LED2, LED3 high level, LED4 low level drive three
LED1-LED3 shines；When electricity is 25% -50%, LED1, LED2 high level, LED3, LED4 low level drive two
LED1-LED2 shines；When electricity is lower than 25%, only LED1 exports high level, and visitor is reminded in driving 1 LED 1 flashing display
Family charging.
2) charging signals for, detecting 2 feet and 3 feet show the state of charging.
3), the electricity display control end (4 foot) of master chip U1 is driven to connect switch unit 13, controls the output that electricity is shown,
Switch unit 13 is the switch that the switch driven as lamps and lanterns and electricity are shown, when switch unit 13 is closed, driving signal
PWM1, PWM2 have output, and control LED drive unit 14 drives lamps and lanterns to light, while electricity display unit 12 works normally display,
When switch unit 13 disconnects, driving signal PWM1, PWM2 does not work without output, LED drive unit 14, electricity display unit 12
Also without display.
4), input undervoltage is protected, and prevents battery over-discharge.In under-voltage protection side (9 foot) input undervoltage of driving master chip U1
Protection, when 1 foot of SN2702 type switch control single-chip microcontroller detects that cell voltage is greater than 3V, single-chip microcontroller is worked normally；When
When 1 foot of SN2702 type switch control single-chip microcontroller detects cell voltage lower than 3V, SN2702 type switch control single-chip microcontroller enters
Under-voltage protection state, driving master chip U1 are not turned on, and driving signal PWM1, PWM2 is without output, to prevent battery over-discharge from leading
The cell damage of cause.
5), instant cut-off lamps and lanterns do not extinguish.
Since lamps and lanterns are when tapping or falling, battery and thimble can be detached from moment, and the output BT+ of battery is caused to exist
Voltage is 0 between 100ms -200ms, such as without special processing, single-chip microcontroller detect BT+ voltage can lower than 3V, single-chip microcontroller without
Output, the LED of LED1-LED4 and lamps and lanterns that electricity is shown extinguish or flash, therefore can be in SN2702 type switch control list
It increases continuous 1 second voltage detecting in piece machine program to be averaged as input voltage, so that it is determined that the voltage of battery is moment
Low-voltage or lasting low-voltage, only 1 second detection voltage average value be lower than 3V when, SN2702 type switch control list
Piece machine just closes output control signal, closes the LED of LED1-LED4 and lamps and lanterns that electricity is shown.
6), the driving power supply control end (5 foot) of master chip U1 is driven to power to driving chip U2, when the switch is closed, given
Driving chip U2 power supply, driving chip U2 are worked normally, and otherwise, driving chip U2 does not work.
7), drive the duty ratio output end (6 foot) of master chip U1 according to switch state and the duty ratio of internal setting, control
Second switch Q2 in LED drive unit 14 processed.
The embodiment of the present invention keeps the function of Mini-lighting equipment control circuit more diversified, and can to avoid lamps and lanterns by
Extinguish caused by hitting, fall etc. under abnormal conditions or flashing, increases product function and stability.
Fig. 4 shows the exemplary circuit knot of LED drive unit in Mini-lighting equipment control circuit provided in an embodiment of the present invention
Structure, for ease of description, only the parts related to the present invention are shown.
As an embodiment of the present invention, LED drive unit 14 includes:
Resistance R4, resistance R5, resistance R11, resistance R14, resistance R15, resistance R16, capacitor C3, first switch tube Q1,
Two switching tube Q2, Light-emitting diode LED and driving chip U2；
The non-controlling end (1 foot) of driving chip U2, ground terminal (2 foot) are grounded, the power input (3 of driving chip U2
Foot) it is grounded for the first control terminal of LED drive unit 14 by resistance R11, the output electric current measure end (4 foot) of driving chip U2
Simultaneously connect with one end of resistance R5, resistance R4, resistance R5, resistance R4 the other end be grounded simultaneously, the output of driving chip U2
Current detecting end (4 foot) is also connect with the current input terminal of second switch Q2, and the current output terminal of second switch Q2 passes through
Resistance R15 ground connection, the control terminal of second switch Q2 are that the second control terminal of LED drive unit 14 is grounded by resistance R14, are driven
The external drive end (5 foot) of dynamic chip U2 is connect with the control terminal of first switch tube Q1, the current output terminal of first switch tube Q1
It is connect with the output electric current measure end (4 foot) of driving chip U2, the current input terminal of first switch tube Q1 and one end of resistance R16
Connection, the other end of resistance R16 and the cathode of Light-emitting diode LED connect, and the anode of Light-emitting diode LED is that LED driving is single
The power end of member 14 is grounded by capacitor C3.
Preferably, driving chip U2 is MH7136 type driving chip.
Wherein 1 foot is NC pin；2 feet are GND pin 2；3 feet are VDD pin；4 feet are CS pin；5 feet are EXT pin 5,
NMOS outside driving.
Preferably, first switch tube Q1 and second switch Q2 is N-type metal-oxide-semiconductor；
The drain electrode of the N-type metal-oxide-semiconductor is the current input terminal of first switch tube Q1 or second switch Q2, the N-type metal-oxide-semiconductor
Source electrode is the current output terminal of first switch tube Q1 or second switch Q2, the grid of the N-type metal-oxide-semiconductor be first switch tube Q1 or
The control terminal of second switch Q2.
In embodiments of the present invention, the driving master chip U1 in electricity display unit 12 is controlled by switch unit 13 to export
Driving signal PW1, PW2, driving signal PW1, PW2 control 3 feet of driving chip U2 and the on-off of second switch Q2 respectively,
To control the output electric current of light source led.
The structure that Fig. 5 shows miniature explosion-proof flashlight provided in an embodiment of the present invention illustrates only for ease of description
Part related to the present invention.
As an embodiment of the present invention, which includes lamp body cylinder 6, and one end of lamp body cylinder 6 is equipped with lamp cap
Cylinder 3, the other end are equipped with tail-hood 7, and the end cross-sectional of lamp cap cylinder 3 is equipped with a Transparent Parts 1, which passes through lamp cap pressure ring 2 and lamp
Head cylinder 3 is fixedly connected, and USB plug 4 can also be arranged on the surface of lamp body cylinder 6 and electricity display window 5, the end of tail-hood 7 are equipped with
One switch block 9.
The Mini-lighting equipment control circuit being additionally provided with inside lamp body cylinder 6 in the various embodiments described above, wherein in LED drive unit 14
Light-emitting diode LED be set in lamp cap cylinder 3, and light can be projected by Transparent Parts 1, be connect with charhing unit 11
USB interface leaks outside in the surface of lamp body cylinder 6, and fills in 4 corkings in, to realize that interface is dust-proof, electricity is aobvious on USB interface by USB
Show that multiple LED1-LED4 in unit 12 can carry out the display of battery capacity, the control of switch unit 13 by electricity display window 5
End processed carries out the control being turned on or off to switch unit 13 by switch block 9, to realize to lamps and lanterns light and electricity
The switch control of display.
The functional modules such as the embodiment of the present invention is integrated with LED driving, electricity is shown, USB charges, have multipurpose, charging
The functions such as convenient, to can display real-time battery electricity facilitate the real-time display of client's charging and electricity；There is battery wink simultaneously
Between power off and keep lamps and lanterns and electricity to show not and extinguish, while avoiding lamps and lanterns and tapping, the lamps and lanterns under abnormal conditions such as fall
Extinguish, increases product function and stability.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within principle.
Claims (10)
1. a kind of Mini-lighting equipment control circuit, connect with battery, which is characterized in that the circuit includes:
Charhing unit, for controlling battery charging, the charhing unit is directly connected to USB interface or connects USB by data line
The charging output end of interface, the charhing unit is connect with the charging end of the battery；
Electricity display unit, for showing current electric quantity, the electricity display control end of the electricity display unit and the charging
The display output end of unit connects, and the power end of the electricity display unit is connect with the charging end of the battery；
Switch unit, for generating driving signal, the output of the switch unit by electricity display unit described in switch control
End is connect with the switch control terminal of the electricity display unit；
LED drive unit, for according to the driving signal drive LED shine, the control terminal of the LED drive unit with it is described
The driving end of electricity display unit connects, and the power end of the LED drive unit is connect with the charging end of the battery.
2. circuit as described in claim 1, which is characterized in that the charhing unit includes:
Resistance R10, capacitor C4, capacitor C5, diode D2, diode D3 and power supply chip；
The anode of the diode D2, the diode D3 cathode be correspondingly connected with respectively with the USB interface, the diode
The cathode of D2 is connect with system power source voltage, and the cathode of the diode D2 also passes through the capacitor C4 ground connection, the diode
The chip beginning energy input terminal of the plus earth of D3, the power supply chip connects system power source voltage, the battery of the power supply chip
Temperature detection end ground connection is led between the constant-current charge electric current setting of the power supply chip and charging current monitoring side and power supply ground terminal
The resistance R10 connection is crossed, the battery terminal connections of the power supply chip are the charging output end of the charhing unit described in
The charged state indication end difference of capacitor C5 ground connection, the battery charging complete indication end of the power supply chip and open-drain output
Input voltage positive input terminal for two display output ends of the charhing unit, the power supply chip connects supply voltage.
3. circuit as claimed in claim 2, which is characterized in that the power supply chip is PT4057 type constant current charging core
Piece.
4. circuit as described in claim 1, which is characterized in that the electricity display unit includes:
Resistance R1, it resistance R2, resistance R8, resistance R15, capacitor C1, capacitor C2, capacitor C7, capacitor C8, capacitor C9, voltage-stabiliser tube, shows
Show module and driving master chip；
One end of the resistance R1 is the power end of the electricity display unit, the other end of the resistance R1 simultaneously with the electricity
One end of resistance R2 is connected with one end of the capacitor C2, the other end ground connection of the resistance R2, another termination of the capacitor C2
Ground, one end of the capacitor C2 are also connect with the voltage detection terminal of the driving master chip, and one end of the capacitor C7 is simultaneously
The power end of the electricity display unit is connect with the power input of the driving master chip, another termination of the capacitor C7
The power input on ground, the driving master chip is also connect with one end of the resistance R15, and the other end of the resistance R15 is same
When connect with the electricity display control end of the driving master chip and one end of the capacitor C8, another termination of the capacitor C8
Ground, the capacitor C9 is in parallel with the capacitor C8, and the electricity display control end of the driving master chip is that electricity display is single
The switch control terminal of member, two charging test sides of the driving master chip are respectively that two electricity of the electricity display unit are aobvious
Show control terminal, the driving power supply control end of the driving master chip, duty ratio output end are respectively the electricity display unit
Two driving ends pass through the capacitor C1 connection, the driving between the power input and ground terminal of the driving master chip
The ground terminal of master chip is grounded, and multiple driving electricity display ends of the driving master chip are multiple with the display module respectively
Driving end is correspondingly connected with, the under-voltage protection side of the driving master chip simultaneously with the anode of the voltage-stabiliser tube and the resistance R8
One end connection, the other end of the resistance R8 connect the voltage output end of the driving master chip, and the anode of the voltage-stabiliser tube connects
Ground, the common end of the voltage-stabiliser tube are connect with one end of the resistance R8.
5. circuit as claimed in claim 4, which is characterized in that the driving master chip is SN2702 type switch control monolithic
Machine.
6. circuit as claimed in claim 4, which is characterized in that the display module includes:
Resistance R3, resistance R6, resistance R7, resistance R9 and Light-emitting diode LED 1, Light-emitting diode LED 2, light emitting diode
LED3, Light-emitting diode LED 4；
The resistance R3, the resistance R6, the resistance R7, the resistance R9 one end be respectively four of the display module
Drive end, the resistance R3, the resistance R6, the resistance R7, the resistance R9 one end respectively with the light emitting diode
The anode connection of LED1, the Light-emitting diode LED 2, the Light-emitting diode LED 3, the Light-emitting diode LED 4, it is described
Light-emitting diode LED 2, the Light-emitting diode LED 3, the Light-emitting diode LED 4 cathode be grounded simultaneously.
7. circuit as described in claim 1, which is characterized in that the LED drive unit includes:
Resistance R4, resistance R5, resistance R11, resistance R14, resistance R15, resistance R16, capacitor C3, first switch tube, second switch
Pipe, Light-emitting diode LED and driving chip；
The non-controlling end of the driving chip, ground terminal are grounded, and the power input of the driving chip is LED driving
First control terminal of unit is grounded by the resistance R11, the output electric current measure end of the driving chip simultaneously with the electricity
Hinder R5, the resistance R4 one end connection, the resistance R5, the resistance R4 the other end be grounded simultaneously, the driving chip
Output electric current measure end also connect with the current input terminal of the second switch, the current output terminal of the second switch
It is grounded by the resistance R15, the control terminal of the second switch passes through institute for the second control terminal of the LED drive unit
Resistance R14 ground connection is stated, the external drive end of the driving chip is connect with the control terminal of the first switch tube, and described first opens
The current output terminal for closing pipe is connect with the output electric current measure end of the driving chip, the current input terminal of the first switch tube
It is connect with one end of the resistance R16, the other end of the resistance R16 is connect with the cathode of the Light-emitting diode LED, described
The anode of Light-emitting diode LED is that the power end of the LED drive unit is grounded by the capacitor C3.
8. circuit as claimed in claim 7, which is characterized in that the first switch tube and the second switch are N-type
Metal-oxide-semiconductor；
The drain electrode of the N-type metal-oxide-semiconductor is the current input terminal of the first switch tube or the second switch, the described N-type
The source electrode of metal-oxide-semiconductor is the current output terminal of the first switch tube or the second switch, and the grid of the N-type metal-oxide-semiconductor is
The control terminal of the first switch tube or the second switch.
9. circuit as described in claim 1, which is characterized in that the switch unit is key switch, switchs, stirs out by touching
Pass, rotating switch or inductive switch；
The key switch, the conduction terminal by touching switch, the toggle switch or the inductive switch are the switch
The output end of unit, the key switch, another conduction terminal by touching switch, the toggle switch or the inductive switch
Ground connection.
10. a kind of miniature explosion-proof flashlight, which is characterized in that the miniature explosion-proof flashlight includes lamp body cylinder, the lamp body cylinder
Inside is equipped with Mini-lighting equipment control circuit as described in any one of claim 1 to 9, and one end of the lamp body cylinder is equipped with lamp cap
Cylinder, the other end of the lamp body cylinder are equipped with tail-hood, and the end cross-sectional of the lamp cap cylinder is equipped with the Transparent Parts of a transmission light, described
The Transparent Parts are fixedly connected by lamp cap pressure ring with the lamp cap cylinder, and the surface of the lamp body cylinder also leaks outside and has the USB interface,
And the USB interface top plug is stamped USB plug, and the USB plug is connect with the surface of the lamp body cylinder, the table of the lamp body cylinder
Face is additionally provided with one for showing that the electricity display window of battery capacity, the tail-hood are equipped with one for lamps and lanterns light and electricity
Show the switch block switched.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711265510.1A CN109873466B (en) | 2017-12-05 | 2017-12-05 | Miniature lamp control circuit and miniature explosion-proof flashlight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711265510.1A CN109873466B (en) | 2017-12-05 | 2017-12-05 | Miniature lamp control circuit and miniature explosion-proof flashlight |
Publications (2)
| Publication Number | Publication Date |
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| CN109873466A true CN109873466A (en) | 2019-06-11 |
| CN109873466B CN109873466B (en) | 2020-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3679700B2 (en) * | 2000-10-18 | 2005-08-03 | アイシン精機株式会社 | Vehicle lamp control device |
| CN201639826U (en) * | 2010-01-26 | 2010-11-17 | 上海创月能源科技有限公司 | LED lamp driving power circuit |
| CN103398298A (en) * | 2013-07-11 | 2013-11-20 | 宁波爱森电器有限公司 | USB (universal serial bus) flashlight |
| CN104684142A (en) * | 2013-11-28 | 2015-06-03 | 深圳市海洋王照明工程有限公司 | Electric torch circuit |
| US9215782B2 (en) * | 2011-01-13 | 2015-12-15 | Acp Japan Co., Ltd. | Medical light source device |
| CN205174054U (en) * | 2015-10-21 | 2016-04-20 | 东莞市盛祺照明科技有限公司 | Flashlight treasured that charges |
-
2017
- 2017-12-05 CN CN201711265510.1A patent/CN109873466B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3679700B2 (en) * | 2000-10-18 | 2005-08-03 | アイシン精機株式会社 | Vehicle lamp control device |
| CN201639826U (en) * | 2010-01-26 | 2010-11-17 | 上海创月能源科技有限公司 | LED lamp driving power circuit |
| US9215782B2 (en) * | 2011-01-13 | 2015-12-15 | Acp Japan Co., Ltd. | Medical light source device |
| CN103398298A (en) * | 2013-07-11 | 2013-11-20 | 宁波爱森电器有限公司 | USB (universal serial bus) flashlight |
| CN104684142A (en) * | 2013-11-28 | 2015-06-03 | 深圳市海洋王照明工程有限公司 | Electric torch circuit |
| CN205174054U (en) * | 2015-10-21 | 2016-04-20 | 东莞市盛祺照明科技有限公司 | Flashlight treasured that charges |
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| Publication number | Publication date |
|---|---|
| CN109873466B (en) | 2020-10-27 |
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