CN215646256U - Touch control circuit of electric fan - Google Patents
Touch control circuit of electric fan Download PDFInfo
- Publication number
- CN215646256U CN215646256U CN202121647304.9U CN202121647304U CN215646256U CN 215646256 U CN215646256 U CN 215646256U CN 202121647304 U CN202121647304 U CN 202121647304U CN 215646256 U CN215646256 U CN 215646256U
- Authority
- CN
- China
- Prior art keywords
- pin
- circuit
- control device
- resistor
- battery protection
- 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
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a touch control circuit of an electric fan, which comprises: the power supply control circuit comprises a power supply management circuit, a battery protection circuit, a booster circuit and an MCU control circuit, wherein the booster circuit comprises a booster input circuit and a booster output circuit; the MCU control circuit comprises a first control device U1 and a second control device U8 connected with the first control device U1, and the second control device U8 is connected with a functional touch device of a fan; the power management circuit comprises a first power output end; the first power output end is connected with the battery through the battery protection circuit; the battery is connected with the input end of the boosting input circuit through the battery protection circuit; the output end of the boost input circuit is connected with the first control device U1, and the first control device U1 is connected with the motor through the boost output circuit. Utilize boost circuit and MCU control circuit to carry out control processing to the power supply of battery and supply power to the motor, utilize battery protection circuit to avoid the battery to the overdischarge of motor, improve the security of circuit.
Description
Technical Field
The utility model relates to a touch control circuit of an electric fan, and belongs to the field of control circuits.
Background
In the prior art, the fan control circuit has the problem that the fan battery of most fans is easy to over-discharge.
SUMMERY OF THE UTILITY MODEL
According to one aspect of the present invention, there is provided a touch control circuit of an electric fan, including: the power supply control circuit comprises a power supply management circuit, a battery protection circuit, a booster circuit and an MCU control circuit, wherein the booster circuit comprises a booster input circuit and a booster output circuit;
the MCU control circuit comprises a first control device U1 and a second control device U8 connected with the first control device U1, and the second control device U8 is connected with a functional touch device of a fan;
the power management circuit comprises a first power output end; the first power output end is connected with the battery through the battery protection circuit;
the battery is connected with the input end of the boosting input circuit through the battery protection circuit;
the output end of the boost input circuit is connected with the first control device U1, and the first control device U1 is connected with the motor through the boost output circuit.
According to the touch control circuit of the electric fan, the booster circuit and the MCU control circuit are used for controlling the power supply of the battery and supplying power to the motor, the battery protection circuit is used for avoiding the over-discharge of the battery to the motor, and the safety of the circuit is improved.
In some embodiments, the input terminal of the power management circuit is used for connecting an external power supply, and the power management circuit further includes a second power output terminal, and the second power output terminal is connected to the input terminal of the boost input circuit. The process of charging the battery and the power supply of discharging the motor can be simultaneously carried out after the power management circuit is externally connected with the power supply, the boosting circuit and the MCU control circuit are reused for controlling the power supply of the external power supply and supplying power to the motor, the battery protection circuit can be used for avoiding the power supply from overcharging the battery, and the safety of the circuit is improved.
In some embodiments, the power management circuit includes a power management chip U4;
the input end of the power management circuit is connected with the output end of an external power supply, and the output end of the external power supply is connected with the 4 th pin and the 8 th pin of the power management chip U4;
the 5 th pin of the power management chip U4 is connected to the battery protection circuit;
the external power supply is used for supplying power to the power supply management circuit, so that the power supply of the external power supply to power loads such as the motor and the like and the charging of the external power supply to the battery are realized, and the charging process of the battery and the power supply process of the motor are simultaneously carried out.
In some embodiments, the battery protection circuit includes a first battery protection chip U5, a second battery protection chip U6, a third battery protection chip U7, a first control switch, a first positive terminal, a second positive terminal, and a negative terminal;
the 1 st pin of the first battery protection chip U5 and the 1 st pin of the second battery protection chip U6 are both connected to the negative electrode of the battery, the 6 th pin of the first battery protection chip U5 and the 6 th pin of the second battery protection chip U6 are both connected to the 1 st pin of the third battery protection chip U7, and the 4 th pin of the first battery protection chip U5 and the 4 th pin of the second battery protection chip U6 are both connected to the 3 rd pin of the third battery protection chip U7;
the 6 th pin of the third battery protection chip U7 is connected to the negative terminal and the negative terminal of the battery, respectively, and the 5 th pin of the third battery protection chip U7 is connected to the second positive terminal through the first chip resistor R15;
the first control switch comprises a first end, a second end and a third end, the first end of the first control switch is connected with the anode of the battery, the second end of the first control switch is connected with the first anode, and the third end of the first control switch is respectively connected with the 1 st pin of the first battery protection chip U5 and the 1 st pin of the second battery protection chip U6 through a second protection resistor R18;
the first positive terminal is connected with the input end of the boosting input circuit, the second positive terminal is connected with the second power output end, the second positive terminal is connected with the 13 th pin of the first control device U1 through a second chip resistor R14, and the 13 th pin of the first control device U1 is connected with the ground through a third chip resistor R13;
the working state of the battery is divided by the connection state of the first control switch, the first positive terminal is connected with an electric load for discharging operation, the second positive terminal is used for charging the battery, the continuity of the first battery protection chip U5, the second battery protection chip U6 and the third battery protection chip U7 is used for realizing the continuity of the discharging operation and the overcharge, and the continuity of the first battery protection chip U5, the second battery protection chip U6 and the third battery protection chip U7 and the connection state of the first control switch are used for avoiding the reverse connection of the battery.
In some embodiments, the boost input circuit includes a second control switch, a first boost input controller U2, and a second boost input controller U3;
the second control switch comprises a first end, a second end and a third end, the first end of the second control switch is connected with the first positive electrode end, and the second end of the second control switch is connected with the 2 nd pin of the first boost input controller U2; a 5 th pin of the first boosting input controller U2 is connected with a 4 th pin and a 6 th pin of the second boosting input controller U3, a 2 nd pin and a 5 th pin of the second boosting input controller U3 are connected with each other to form a common pin, the common pin of the second boosting input controller U3 is connected with a 14 th pin of the first control device U1 through a first resistor R10, and the common pin of the second boosting input controller U3 is connected with a 15 th pin of the first control device U1 through a second resistor R11;
the No. 2 pin of the first boosting input controller U2 is also connected with the first power supply output end;
the boosting output circuit comprises a boosting output MOS tube Q1, the drain electrode of the boosting output MOS tube Q1 is connected with the negative electrode of the motor, the grid electrode of the boosting output MOS tube Q1 is connected with the 11 th pin of the first control device U1, the source electrode of the boosting output MOS tube Q1 is connected with the 12 th pin of the first control device U1, and the positive electrode of the motor is connected with the DC charging interface;
two power supply sources are provided to the boost output circuit: one is an external power supply, the other is a battery, the first boost input controller U2 and the second boost input controller U3 are used for realizing boost input, the access state of the first resistor R10, the second resistor R11 and the Q1 is adjusted through the first control device U1, and the size of a wind gear of the motor is adjusted.
In some embodiments, the MCU control circuit further comprises a first charge indicator light and/or a second charge indicator light and/or a third charge indicator light and/or a fourth charge indicator light; the first charging indicator lamp is provided with a first cathode end, a second cathode end and an anode end; the power supply management circuit also comprises a third power supply output end connected with the second power supply input end and a voltage-dividing resistor module;
the voltage dividing resistance module comprises a first voltage dividing end, a second voltage dividing end and a third voltage dividing end, wherein the first voltage dividing end is connected with the output end of a third power supply, the second voltage dividing end is connected with the ground, and the third voltage dividing end is connected with a 4 th pin of a first control device U1;
the first cathode end is connected to the 5 th pin of the first control device U1, the second cathode end is connected to the 6 th pin of the first control device U1, the 3 rd pin of the first control device U1 is connected with the 7 th pin of the power management chip U4, and the anode end is connected with the live wire through a third resistor R7;
the cathode of the second charge indicator lamp is connected with the 2 nd pin of the first control device U1, and/or the cathode of the third charge indicator lamp is connected with the 7 th pin of the first control device U1, and/or the cathode of the fourth charge indicator lamp is connected with the 10 th pin of the first control device U1, and/or the anodes of the second charge indicator lamp, the third charge indicator lamp and the fourth charge indicator lamp are connected with the live wire through a fourth resistor R6;
whether the fan battery is fully charged is prompted by the first charging indicating lamp, and then the charging progress of the fan battery is prompted by the second charging indicating lamp, the third charging indicating lamp and the fourth charging indicating lamp.
In some embodiments, the LED driving circuit comprises a transistor Q4 and an LED lamp; the base electrode of the triode Q4 is connected with the 9 th pin of the first control device U1 through a fifth resistor R22, the collector electrode of the triode Q4 is connected with the negative electrode of the LED lamp, and the emitting electrode of the triode Q4 is connected with the ground; the anode of the LED lamp is connected with the second power supply output end or the first anode end; and (4) adding an illumination function, and realizing whether the LED lamp is in an illumination state or not by utilizing the first control device U1 and the triode Q4.
In some embodiments, the functional touch device comprises a fan wind speed touch piece and/or an LED lighting touch piece, the fan wind speed touch piece is connected with the 6 th pin of the second control device U8, and/or the LED lighting touch piece is connected with the 5 th pin of the second control device U8, the 7 th pin of the second control device U8 is connected with the 8 th pin of the first control device U1, and the 3 rd pin of the second control device U8 is connected with the second power output end or the first positive terminal through a sixth resistor R25; the fan speed touch piece, the second control device U8 and the first control device U1 are used for adjusting the size of a wind shield of the fan motor, and the LED lighting touch piece, the second control device U8 and the first control device U1 are used for adjusting the brightness intensity of the LED lamp.
In some embodiments, the 2 nd pin of the power management chip U4 is connected to ground through the seventh resistor R16, and/or the 1 st pin, the 3 rd pin and the 9 th pin of the power management chip U4 are all connected to ground, and/or the 5 th pin of the power management chip U4 is also connected to ground through the first capacitor C2, and the seventh resistor R16 is used to change the amount of current supplied to the battery, so as to avoid overcurrent of the battery.
In some embodiments, the boost input circuit further comprises a first rectifier D1 and/or a second rectifier D2 and/or a first energy storage inductor L1 and/or a second capacitor C5 and/or a third capacitor C6 and/or a fourth capacitor C8 and/or an eighth resistor R12 and/or a first voltage dividing resistor R3 and/or a second voltage dividing resistor R4;
and/or one end of the first voltage-dividing resistor R3 is connected with the cathode of the first rectifier D1, the other end of the first voltage-dividing resistor R3 and one end of the second voltage-dividing resistor R4 form a first common end, the other end of the second voltage-dividing resistor R4 is connected with the ground, the first common end is respectively connected with the first resistor R10, the second resistor R11 and the 1 st pin of the first boost input controller U2, and the fourth capacitor C8 is connected with the first voltage-dividing resistor R3 in parallel;
and/or the anode of the first rectifier D1 is connected with the common pin of the second boost input controller U3, the cathode of the first rectifier D1 is connected with the ground through a second capacitor C5, the cathode of the first rectifier D1 is connected with the ground through a third capacitor C6, and the cathode of the first rectifier D1 is also connected with the DC charging interface;
and/or the anode of the second rectifier D2 is connected with the first power output terminal, the cathode is connected with the 2 nd pin of the first boost input controller U2, and the cathode of the second rectifier D2 is also connected with the common pin of the second boost input controller U3 through the first energy storage inductor L1;
and/or the first power supply output end is connected with the third end of the second control switch through an eighth resistor R12;
the current provided by the first boost input controller U2 is rectified by the second rectifier D2, the current output by the common pin of the second boost input controller U3 is rectified by the first rectifier D1, the magnitude of the output current is adjusted by the second capacitor C5, the third capacitor C6, the fourth capacitor C8, the first voltage-dividing resistor R3 and the second voltage-dividing resistor R4, the adjustment range of the output current is 1A-3A, the current provided by the battery is prevented from being reversely connected to the first power output end by the eighth resistor R12, the current provided by the battery is directly provided to the first boost input controller U2, the current backflow output by the common pin of the second boost input controller U3 is prevented by the first energy storage inductor L1, and the current output by the common pin of the second boost input controller U3 is ensured to flow to the first rectifier D1.
In some embodiments, the MCU control circuit further comprises a first zener diode D3, a second zener diode D4, a first patch capacitor C10, and a second patch capacitor C11;
the first chip capacitor C10 is connected with the 1 st pin of the first control device U1 to form a first connection end, the first chip capacitor C10 is connected with the 16 th pin of the first control device U1 to form a second connection end, the second chip capacitor C11 is connected with the 1 st pin of the first control device U1 to form a third connection end, and the second chip capacitor C11 is connected with the 16 th pin of the first control device U1 to form a fourth connection end;
the first connecting end is connected with the first positive end through a second voltage-stabilizing diode D4, the third connecting end is connected with the third power output end through a first voltage-stabilizing diode D3, and the second connecting end and the fourth connecting end are both connected with the ground; the first connecting end and the third connecting end are both connected with the live wire; and respectively carrying out voltage stabilization treatment on the voltage provided by the battery and the voltage provided by the external power supply.
Drawings
Fig. 1 is an overall connection diagram of a touch control circuit of an electric fan according to an embodiment of the present invention;
FIG. 2 is a partial circuit diagram of a power management circuit of the touch control circuit of the electric fan;
FIG. 3 is a partial circuit diagram of a battery protection circuit of the touch control circuit of the electric fan;
FIG. 4 is a partial circuit diagram of a boost input circuit of the touch control circuit of the electric fan;
FIG. 5 is a partial circuit diagram of a boost output circuit of the touch control circuit of the electric fan;
FIG. 6 is a partial circuit connection diagram of a first control device U1 of the touch control circuit of the electric fan;
fig. 7 is a partial circuit connection diagram of a second control device U8 of the touch control circuit of the electric fan;
fig. 8 is a partial circuit connection diagram of an LED driving circuit of a touch control circuit of an electric fan.
The figure shows that: the power supply comprises an external power supply 1, a power management circuit 2, a first power output end 2b, a second power output end 2a, a third power output end 2c, a voltage-dividing resistor module 21, a third voltage-dividing end 21a, a battery protection circuit 3, a first positive end 3a, a second positive end 3b, a negative end 3c, a booster circuit 4, a booster input circuit 41, a booster output circuit 42, an MCU control circuit 5, a first charging indicator lamp 51, a second charging indicator lamp 52, a third charging indicator lamp 53, a fourth charging indicator lamp 54, a functional touch device 6, a fan wind speed touch piece 61, an LED illumination touch piece 62, an LED drive circuit 7, an LED lamp 71, a battery 8 and a DC charging interface 9.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1-8 schematically show a touch control circuit of an electric fan according to an embodiment of the present invention. As shown in fig. 1 to 8, the touch control circuit of the electric fan includes: the system comprises a power management circuit 2, a battery protection circuit 3, a booster circuit 4, an MCU control circuit 5, a functional touch device 6 of a fan and an LED drive circuit 7; the input end of the power management circuit 2 is used for connecting an external power supply 1, and the functional touch device 6 comprises a fan wind speed touch piece 61 and an LED lighting touch piece 62;
the electric fan is a lithium battery fan;
referring to fig. 1-2, the output terminal of the external power supply 1 is connected to the input terminal of the power management circuit, and the ground terminal of the external power supply 1 is connected to ground.
Referring to fig. 1-4, the power management circuit 2 includes a first power output terminal 2b, a second power output terminal 2a, and a third power output terminal 2C, a power management chip U4, a voltage-dividing resistor module 21, a seventh resistor R16, a first capacitor C2, and a fifth capacitor C1;
the power management chip U4 is provided with 9 connection pins, the 1 st pin, the 3 rd pin and the 9 th pin of the power management chip U4 are connected with the ground, the 2 nd pin of the power management chip U4 is connected with the ground through a seventh resistor R16, the 4 th pin and the 8 th pin of the power management chip U4 are connected with each other to form a common pin, the common pin of the power management chip U4 is connected with the output end of an external power supply, namely, the 4 th pin and the 8 th pin of the power management chip U4 are both connected with the output end of the external power supply, the 5 th pin of the power management chip U4 is connected with the first power output end 2b, the 5 th pin of the power management chip U4 is also connected with the ground through a first capacitor C2, the 6 th pin of the power management chip U4 is suspended, and the 7 th pin of the power management chip U4 is connected with the 3 rd pin of the first control device U1;
the voltage-dividing resistor module 21 comprises a first voltage-dividing end, a second voltage-dividing end and a third voltage-dividing end 21a, wherein the first voltage-dividing end is connected with the third power output end 2c, the second voltage-dividing end is connected with the ground, and 2 is connected with the 4 th pin of the first control device U1;
the output end of the external power supply is firstly branched into a first branch for connecting with the third power supply output end 2C, namely, the first branch is used for connecting with a first voltage division end, then the second branch is firstly branched to be connected with one end of a fifth capacitor C1, the other end of the fifth capacitor C1 is connected with the ground, and then the second branch of the output end of the external power supply connected with a fifth capacitor C1 is connected with the common pin of a power management chip U4;
the voltage-dividing resistor module 21 is further provided with a third voltage-dividing resistor R8 and a fourth voltage-dividing resistor R9, the third voltage-dividing resistor R8 and the fourth voltage-dividing resistor R9 are connected with each other to form a second common end, the single end of the third voltage-dividing resistor R8 is connected with the third power output end 2c, the single end of the fourth voltage-dividing resistor R9 is connected with the ground, and the second common end is connected with the 4 th pin of the first control device U1;
the resistance of the third voltage dividing resistor R8 is 1K omega, the resistance of the fourth voltage dividing resistor R9 is 3K omega, the capacitance of the fifth capacitor C1 is 10uF, the resistance of the seventh resistor R16 is 1.8K omega, the capacitance of the first capacitor C2 is 10uF, and the model of the power management chip U4 is a lithium battery protection chip TP4056, so that the motor can be discharged, and the battery 8 can be charged.
Referring to fig. 1 and 3, the battery protection circuit 3 includes a first battery protection chip U5, a second battery protection chip U6, a third battery protection chip U7, a first control switch, a first positive terminal 3a, a second positive terminal 3b, a negative terminal 3C, a first protection resistor R17, a second protection resistor R18, a third protection resistor R19, a fourth protection resistor R20, a first chip resistor R15, and a fifth capacitor C16;
the first battery protection chip U5 is provided with six connecting pins, the 1 st pin of the first battery protection chip U5 is connected with the negative electrode of the battery 8, the 2 nd pin and the 5 th pin of the first battery protection chip U5 are connected with each other to form a third common end, the 3 rd pin of the first battery protection chip U5 is connected with the ground, the 4 th pin of the first battery protection chip U5 is connected with the 3 rd pin of the third battery protection chip U7, the 6 th pin of the first battery protection chip U5 is connected with the 1 st pin of the third battery protection chip U7, the first battery protection chip U5 is a double NMOS tube, the model of the first battery protection chip U5 is 8205A, and the 6 connecting pins of the first battery protection chip U5 are respectively an S1 pin, a D1 pin, an S2 pin, a G1 pin, a D2 pin and a G2 pin (from the 1 st pin to the 6 th pin);
the second battery protection chip U6 is provided with six connecting pins, the 1 st pin of the second battery protection chip U6 is connected with the negative electrode of the battery 8, the 2 nd pin and the 5 th pin of the second battery protection chip U6 are connected with each other to form a fourth common end, the 3 rd pin of the second battery protection chip U6 is connected with the ground, the 4 th pin of the second battery protection chip U6 is connected with the 3 rd pin of the third battery protection chip U7, the 6 th pin of the second battery protection chip U6 is connected with the 1 st pin of the third battery protection chip U7, the second battery protection chip U6 is a double NMOS tube, the model of the second battery protection chip U6 is 8205A, and the 6 connecting pins of the second battery protection chip U6 are respectively an S1 pin, a D1 pin, an S2 pin, a G1 pin, a D2 pin and a G2 pin (from the 1 st pin to the 6 th pin); the third public end is connected with the fourth public end;
the third battery protection chip U7 is provided with 6 connection pins, the 1 st pin of the third battery protection chip U7 is connected to the 6 th pin of the first battery protection chip U5 and the 6 th pin of the second battery protection chip U6, the 2 nd pin of the third battery protection chip U7 is connected to ground through a fourth protection resistor R20, the 3 rd pin of the third battery protection chip U7 is connected to the 4 th pin of the first battery protection chip U5 and the 4 th pin of the second battery protection chip U6, the 4 th pin of the third battery protection chip U7 is suspended, the 5 th pin of the third battery protection chip U7 is connected to the second positive terminal 3b through a first chip resistor R15, the 5 th pin of the third battery protection chip U7 is further connected to ground through a fifth capacitor C16, the 6 th pin of the third battery protection chip U7 is connected to the negative terminal 3C and the negative terminal of the battery 8, the model number DW 3985 of the third battery protection chip U7 is DW01, the 6 connection pins of the third battery protection chip U7 are respectively an OD pin, a CS I pin, an OC pin, a TD pin, a VDD pin and a VSS pin (from pin 1 to pin 6);
the first control switch may be a battery MOS transistor Q2, the drain of the opposite battery MOS transistor Q2 is connected to the positive terminal of the battery 8, the source of the battery MOS transistor Q2 is connected to the first positive terminal 3a, the gate of the battery MOS transistor Q2 is connected to the source of the battery MOS transistor Q2 through a first protection resistor R17, the gate of the battery MOS transistor Q2 is connected to the first protection resistor R17 to form a fifth common terminal, the 1 st pin of the first battery protection chip U5, the 1 st pin of the second battery protection chip U6 and the 6 th pin of the third battery protection chip U7 are connected to each other to form a sixth common terminal, the fifth common terminal is connected to the sixth common terminal through a second protection resistor R18, the fifth common terminal is further connected to one end of a third protection resistor R19 through the second protection resistor R18, the other end of the third protection resistor R19 is connected to ground, the sixth common terminal is connected to the negative terminal of the battery 8, and the sixth common terminal is connected to the third protection resistor R19, the signal of battery MOS pipe Q2 is AO3401, the resistance of first protection resistance R17 is 200K omega, the resistance of second protection resistance R18 is 47K omega, the resistance of third protection resistance R19 is 1K omega, the resistance of fourth protection resistance R20 is 1K omega and the resistance of first chip resistance R15 is 150 omega, protect battery 8, avoid the overcharge of battery 8, overdischarge, the electric current of access is too big, and avoid battery 8 to connect conversely, improve circuit security.
Referring to fig. 1, 4 and 5, the boost circuit 4 includes a boost input circuit 41 and a boost output circuit 42, the boost input circuit 41 includes a second control switch, a first boost input controller U2, a second boost input controller U3, a first rectifier D1, a second rectifier D2, a first energy storage inductor L1, a second capacitor C5, a third capacitor C6, a fourth capacitor C8, a first resistor R10, a second resistor R11, an eighth resistor R12, a first voltage dividing resistor R3, a second voltage dividing resistor R4, a ninth resistor R5, a sixth capacitor C3 and a seventh capacitor C9;
one end of the first voltage-dividing resistor R3 is connected to the cathode of the first rectifier D1, the other end of the first voltage-dividing resistor R3 and one end of the second voltage-dividing resistor R4 form a first common end, the other end of the second voltage-dividing resistor R4 is connected to ground, and the fourth capacitor C8 is connected in parallel with the first voltage-dividing resistor R3;
the second control switch may be a boost input MOS Q3, the first boost input controller U2 is provided with 5 connection pins, the 1 st pin of the first boost input controller U2 is connected to the first common terminal, the 2 nd pin of the first boost input controller U2 is connected to the source of the boost input MOS Q3, the 2 nd pin of the first boost input controller U2 is further connected to the cathode of the second rectifier D2, the 2 nd pin of the first boost input controller U2 is further connected to ground through the seventh capacitor C9, the 2 nd pin of the first boost input controller U2 is further connected to the second power output terminal 2a through the second rectifier D2, the 3 rd pin of the first boost input controller U2 is connected to ground through the ninth resistor R5, the 4 th pin of the first boost input controller U2 is connected to ground, the 5 th pin of the first boost input controller U2 is connected to the 4 th and 6 th pins of the second boost input controller U3, the model of the first boost input controller U2 is FP 5209;
the second power output end 2a is connected with the anode of a second rectifier D2, the second power output end 2a is further connected with the gate of a boosting input MOS tube Q3 through an eighth resistor R12, the first positive electrode end 3a is connected with the drain of the boosting input MOS tube Q3, the second power output end 2a is connected with the ground sequentially through a second rectifier D2 and a sixth capacitor C3, and the type of the boosting input MOS tube Q3 is AO 3401;
the second boost input controller U3 is provided with 6 connection pins, the 1 st pin and the 3 rd pin of the first boost input controller U3 are both connected with the ground, the 4 th pin and the 6 th pin of the first boost input controller U3 are both connected with the 5 th pin of the first boost input controller U2, the 2 nd pin and the 5 th pin of the first boost input controller U3 are connected with each other to form a common pin, the common pin of the second boost input controller U3 is connected with the cathode of the second rectifier D2 through a first energy storage inductor L1, the common pin of the second boost input controller U3 is connected with the anode of the first rectifier D1, the cathode of the first rectifier D1 is connected with the ground through a second capacitor C5, the cathode of the first rectifier D1 is connected with the ground through a third capacitor C6, the cathode of the first rectifier D1 is further connected with a DC charging interface 9, the cathode of the first rectifier D1 is connected with the cathode of the first divider resistor R3, and the second boost input controller U3 is a single NMOS control tube, the model of the second boost input controller U3 is 8205A, and the 6 connection pins of the second boost input controller U3 are respectively an S1 pin, a D1 pin, an S2 pin, a G1 pin, a D2 pin and a G2 pin (from the 1 st pin to the 6 th pin);
the first common terminal is connected with the 14 th pin of the first control device U1 through a first resistor R10, and the first common terminal is connected with the 15 th pin of the first control device U1 through a second resistor R11;
the resistance of the eighth resistor R12 is 10KΩ, the model of the second rectifier D2 is SS34, the capacitance of the sixth capacitor C3 is 10uF, the model of the first rectifier D1 is SS34, the capacitance of the third capacitor C6 is 10uF, the capacitance of the fourth capacitor C8 is 20pF, the resistance of the ninth resistor R5 is 47KΩ, the resistance of the first resistor R10 is 57.6KΩ, the resistance of the second resistor R11 is 118KΩ, the resistance of the first divider resistor R3 is 100KΩ and the precision is 1%, and the resistance of the second divider resistor R4 is 33KΩ and the precision is 1%;
the boosting output circuit 42 comprises a boosting output MOS transistor Q1, a fourth chip resistor R1, a fifth chip resistor R24, a third chip capacitor C4, a fourth chip capacitor C5, a fifth chip capacitor C13 and a polar capacitor C7;
the grid of the boost output MOS tube Q1 is connected with the 11 th pin of the first control device U1, the 12 th pin of the first control device U1 is connected with the ground through a fifth chip capacitor C13, the 12 th pin of the first control device U1 is connected with the ground through a fifth chip resistor R24 and a fourth chip resistor R1 in sequence, the 12 th pin of the first control device U1 is connected with the source of the boost output MOS tube Q1 through a fifth chip resistor R24, the drain of the boost output MOS tube Q1 is connected with the cathode of the motor, the fifth chip capacitor C13 is arranged on a line from the 12 th pin of the first control device U1 to the fifth chip resistor R24, and the fourth chip resistor R1 is arranged on a line from the fifth chip resistor R24 to the source of the boost output MOS tube Q1;
the DC charging interface 9 is connected with the ground through a polar capacitor C7, the DC charging interface 9 is connected with the ground through a third patch capacitor C4, the DC charging interface 9 is connected with the ground through a fourth patch capacitor C5, the DC charging interface 9 is connected with the positive pole of the motor, and the polar capacitor C7, the third patch capacitor C4 and the fourth patch capacitor C5 are sequentially distributed on a circuit from the DC charging interface 9 to the positive pole of the motor; the magnitude of the voltage to the motor of the fan is adjusted.
Referring to fig. 1, 6 and 7, the MCU control circuit 5 includes a first control device U1, a second control device U8, a first charge indicator 51, a second charge indicator 52, a third charge indicator 53, a fourth charge indicator 54, a first zener diode D3, a second zener diode D4, a first patch capacitor C10, a second patch capacitor C11, a fourth resistor R6, a third resistor R7, a sixth patch resistor R26, a sixth resistor R25, a third patch resistor R13, a second patch resistor R14, a sixth patch capacitor C12, a seventh patch capacitor C14, an eighth patch capacitor C15 and a ninth patch capacitor C17, wherein the first charge indicator 51 has a first cathode terminal, a second cathode terminal and an anode terminal;
the first control device U1 is provided with 16 connection pins, the 1 st pin of the first control device U1 is connected with the first patch capacitor C10 and forms a first connection end, the 16 th pin of the first control device U1 is connected with the first patch capacitor C10 and forms a second connection end, the 1 st pin of the first control device U1 is connected with the first patch capacitor C11 and forms a third connection end, the 16 th pin of the first control device U1 is connected with the first patch capacitor C11 and forms a fourth connection end, the first connection end is connected with the first positive electrode end 3a through a second voltage stabilizing diode D4, the third connection end is connected with the third power output end 2C through the first voltage stabilizing diode D3, the second connection end and the fourth connection end are both connected with the ground, the first connection end and the third connection end are both connected with the live wire, the 2 nd pin of the first control device U1 is connected with the cathode of the second charging indicator lamp 52, the first connection end U1 of the first control device U1 is connected with the first connection end 367 pin of the power management chip 4, the 4 th pin of the first control device U1 is connected to the second common terminal, the 5 th pin of the first control device U1 is connected to the first cathode terminal, the 6 th pin of the first control device U1 is connected to the second cathode terminal, the 7 th pin of the first control device U1 is connected to the cathode of the third charge indicator lamp 53, the 8 th pin of the first control device U1 is connected to the 7 th pin of the second control device U8, the 9 th pin of the first control device U1 is connected to the LED driving circuit 7, the 10 th pin of the first control device U1 is connected to the cathode of the fourth charge indicator lamp 54, the 11 th pin of the first control device U1 is connected to the gate of the boost output MOS Q1, the 12 th pin of the first control device U1 is connected to the source of the boost output MOS Q36 through a fifth patch resistor R24, the 13 th pin of the first control device U1 is connected to the ground through a sixth patch capacitor C12, and the first control device U1 is connected to the third control device U13, a 13 th pin of the first control device U1 is connected with the second positive terminal 3b through a second chip resistor R14, a sixth chip capacitor C12 is arranged on a line from the second positive terminal 3b to the 13 th pin of the first control device U1 and on a line from the 13 th pin of the first control device U1 to a third chip resistor R13, a 14 th pin of the first control device U1 is connected with the first common terminal through a first resistor R10, and a 15 th pin of the first control device U1 is connected with the first common terminal through a first resistor R11;
anodes of the second charging indicator lamp 52, the third charging indicator lamp 53 and the fourth charging indicator lamp 54 are all connected with the live wire through a fourth resistor R6, and an anode end is connected with the live wire through a third resistor R7;
the second control device U8 is provided with 8 connection pins, the 1 st pin of the second control device U8 is suspended, the 2 nd pin of the second control device U8 is connected with the ground through an eighth patch capacitor C15, the 3 rd pin of the second control device U8 is connected with the first power output end 2b or the first positive terminal 3a through a sixth resistor R25, the 3 rd pin of the second control device U8 is connected with the live wire through a sixth patch resistor R26, the 3 rd pin of the second control device U8 is connected with the ground through a seventh patch capacitor C14, the 3 rd pin of the second control device U8 is connected with the ground through a ninth patch capacitor C17, the 4 th pin of the second control device U8 is connected with the ground, the 5 th pin of the second control device U8 is connected with the LED illumination touch piece 62, the 6 th pin of the second control device U8 is connected with the fan wind speed touch piece 61, the second pin of the second control device U367 of the second control device U8 is connected with the first control pin 368 of the first control device U1, the 8 th pin of the second control device U8 is suspended;
the model number of the first control device U1 is 3460;
the switch of the fan motor and the wind speed gear shifting of the fan motor are controlled, the switch and the gear shifting of the LED driving circuit 7 are controlled, and the charging indicating function is arranged, so that a user can conveniently obtain the charging process of the battery 8.
Referring to fig. 1 and 8, the LED driving circuit 7 includes a transistor Q4, an LED lamp 71, a fifth resistor R22, a seventh chip resistor R21, and an eighth chip resistor R23;
the base of the triode Q4 is connected with the 9 th pin of the first control device U1 through the fifth resistor R22, the collector of the triode Q4 is connected with the negative electrode of the LED lamp 71, the emitter of the triode Q4 is connected with the ground, the 9 th pin of the first control device U1 is connected with the ground through the fifth resistor R22 and the eighth chip resistor R23 in sequence, the eighth chip resistor R23 is arranged on a line from the fifth resistor R22 to the base of the triode Q4, and the positive electrode of the LED lamp 71 is connected with the first power output end 2b or the first positive end 3a through the seventh chip resistor R21, so that the lighting function is increased.
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the utility model.
Claims (10)
1. Touch control circuit of electric fan characterized by, includes: the power supply control circuit comprises a power supply management circuit, a battery protection circuit, a booster circuit and an MCU control circuit, wherein the booster circuit comprises a booster input circuit and a booster output circuit;
the MCU control circuit comprises a first control device U1 and a second control device U8 connected with the first control device U1, and the second control device U8 is connected with a functional touch device of a fan;
the power management circuit comprises a first power output terminal; the first power supply output end is connected with a battery through the battery protection circuit;
the battery is connected with the input end of the boosting input circuit through the battery protection circuit;
the output end of the boost input circuit is connected with the first control device U1, and the first control device U1 is connected with the motor through the boost output circuit.
2. The touch control circuit of an electric fan as claimed in claim 1, wherein the input terminal of the power management circuit is used for connecting an external power supply, and the power management circuit further comprises a second power output terminal, and the second power output terminal is connected with the input terminal of the boost input circuit.
3. The touch control circuit of electric fan according to claim 2, wherein said power management circuit comprises a power management chip U4;
the input end of the power management circuit is connected to the output end of the external power supply, and the output end of the external power supply is connected to the 4 th pin and the 8 th pin of the power management chip U4;
the 5 th pin of the power management chip U4 is connected to the battery protection circuit.
4. The touch control circuit of the electric fan as claimed in claim 3, wherein the battery protection circuit comprises a first battery protection chip U5, a second battery protection chip U6, a third battery protection chip U7, a first control switch, a first positive terminal, a second positive terminal and a negative terminal;
the 1 st pin of the first battery protection chip U5 and the 1 st pin of the second battery protection chip U6 are both connected to the negative electrode of the battery, the 6 th pin of the first battery protection chip U5 and the 6 th pin of the second battery protection chip U6 are both connected to the 1 st pin of the third battery protection chip U7, and the 4 th pin of the first battery protection chip U5 and the 4 th pin of the second battery protection chip U6 are both connected to the 3 rd pin of the third battery protection chip U7;
a pin 6 of the third battery protection chip U7 is connected to the negative terminal and the negative terminal of the battery, respectively, and a pin 5 of the third battery protection chip U7 is connected to the second positive terminal through a first chip resistor R15;
the first control switch comprises a first end, a second end and a third section, the first end of the first control switch is connected with the anode of the battery, the second end of the first control switch is connected with the first anode, and the third end of the first control switch is respectively connected with the 1 st pin of the first battery protection chip U5 and the 1 st pin of the second battery protection chip U6 through a second protection resistor R18;
the first positive terminal is connected with the input end of the boosting input circuit, the second positive terminal is connected with the second power output end, the second positive terminal is connected with the 13 th pin of the first control device U1 through a second chip resistor R14, and the 13 th pin of the first control device U1 is connected with the ground through a third chip resistor R13.
5. The touch control circuit of electric fan of claim 4, wherein said boost input circuit comprises a boost input second control switch, a first boost input controller U2 and a second boost input controller U3;
the second control switch comprises a first end, a second end and a third end, the first end of the second control switch is connected with the first positive end, and the second end of the control switch is connected with the 2 nd pin of the first boost input controller U2;
a 5 th pin of the first boost input controller U2 is connected with a 4 th pin and a 6 th pin of the second boost input controller U3, a 2 nd pin and a 5 th pin of the second boost input controller U3 are connected with each other to form a common pin, the common pin of the second boost input controller U3 is connected with a 14 th pin of the first control device U1 through a first resistor R10, and the common pin of the second boost input controller U3 is connected with a 15 th pin of the first control device U1 through a second resistor R11;
the No. 2 pin of the first boosting input controller U2 is also connected with the first power output end; and/or
The boost output circuit comprises a boost output MOS tube Q1, the drain electrode of the boost output MOS tube Q1 is connected with the negative electrode of the motor, the grid electrode of the boost output MOS tube Q1 is connected with the 11 th pin of the first control device U1, the source electrode of the boost output MOS tube Q1 is connected with the 12 th pin of the first control device U1, and the positive electrode of the motor is connected with a DC charging interface.
6. The touch control circuit of the electric fan as claimed in any one of claims 3 to 5, wherein the MCU control circuit further comprises a first charge indicator lamp and/or a second charge indicator lamp and/or a third charge indicator lamp and/or a fourth charge indicator lamp; the first charging indicator lamp is provided with a first cathode end, a second cathode end and an anode end; the power supply management circuit also comprises a third power supply output end connected with the second power supply input end and a voltage-dividing resistor module;
the voltage division resistance module comprises a first voltage division end, a second voltage division end and a third voltage division end, the first voltage division end is connected with the third power output end, the second voltage division end is connected with the ground, and the third voltage division end is connected with a 4 th pin of a first control device U1;
the first cathode terminal is connected to a pin 5 of the first control device U1, the second cathode terminal is connected to a pin 6 of the first control device U1, a pin 3 of the first control device U1 is connected to a pin 7 of the power management chip U4, and the anode terminal is connected to a live wire through a third resistor R7;
the cathode of the second charge indicator lamp is connected with the 2 nd pin of the first control device U1, and/or the cathode of the third charge indicator lamp is connected with the 7 th pin of the first control device U1, and/or the cathode of the fourth charge indicator lamp is connected with the 10 th pin of the first control device U1, and/or the anodes of the second charge indicator lamp, the third charge indicator lamp and the fourth charge indicator lamp are all connected with the live wire through a fourth resistor R6.
7. The touch control circuit of the electric fan as claimed in claim 6, wherein the function touch device comprises a fan wind speed touch device and/or an LED illumination touch device,
the fan wind speed touch piece is connected with the 6 th pin of the second control device U8 and/or
The LED illumination touch piece is connected with the 5 th pin of the second control device U8,
the 7 th pin of the second control device U8 is connected to the 8 th pin of the first control device U1, and the 3 rd pin of the second control device U8 is connected to the second power output terminal or the first positive terminal through a sixth resistor R25.
8. The touch control circuit of electric fan as claimed in claim 4, wherein the No. 2 pin of the power management chip U4 is connected to ground through a seventh resistor R16;
and/or the 1 st pin, the 3 rd pin and the 9 th pin of the power management chip U4 are all connected with the ground;
and/or the 5 th pin of the power management chip U4 is also connected with the ground through a first capacitor C2.
9. The touch control circuit of the electric fan as claimed in claim 5, wherein the boost input circuit further comprises a first rectifier D1 and/or a second rectifier D2 and/or a first energy storage inductor L1 and/or a second capacitor C5 and/or a third capacitor C6 and/or a fourth capacitor C8 and/or an eighth resistor R12 and/or a first divider resistor R3 and/or a second divider resistor R4;
and/or one end of the first voltage-dividing resistor R3 is connected to the cathode of the first rectifier D1, and the other end of the first voltage-dividing resistor R3 forms a first common end with one end of the second voltage-dividing resistor R4, the other end of the second voltage-dividing resistor R4 is connected to ground, the first common end is respectively connected to the first resistor R10, the second resistor R11 and the 1 st pin of the first boost input controller U2, and the fourth capacitor C8 is connected in parallel to the first voltage-dividing resistor R3;
and/or the anode of the first rectifier D1 is connected to the common pin of the second boost input controller U3, the cathode of the first rectifier D1 is connected to ground through the second capacitor C5, the cathode of the first rectifier D1 is further connected to ground through the third capacitor C6, and the cathode of the first rectifier D1 is further connected to a DC charging interface;
and/or the anode of the second rectifier D2 is connected with the first power output terminal, the cathode is connected with the 2 nd pin of the first boost input controller U2, and the cathode of the second rectifier D2 is also connected with the common pin of the second boost input controller U3 through the first energy storage inductor L1;
and/or the first power output end is connected with the third end of the second control switch through an eighth resistor R12.
10. The touch control circuit of the electric fan as claimed in any one of claims 8 to 9, wherein the MCU control circuit further comprises a first zener diode D3, a second zener diode D4, a first patch capacitor C10 and a second patch capacitor C11;
the first patch capacitor C10 is connected with the 1 st pin of the first control device U1 and forms a first connection end, the first patch capacitor C10 is connected with the 16 th pin of the first control device U1 and forms a second connection end, the second patch capacitor C11 is connected with the 1 st pin of the first control device U1 and forms a third connection end, and the second patch capacitor C11 is connected with the 16 th pin of the first control device U1 and forms a fourth connection end;
the first connection end is connected with a first positive electrode end through the second voltage-stabilizing diode D4, the third connection end is connected with a third power supply output end through the first voltage-stabilizing diode D3, and the second connection end and the fourth connection end are both connected with the ground; the first connecting end and the third connecting end are connected with a live wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121647304.9U CN215646256U (en) | 2021-07-19 | 2021-07-19 | Touch control circuit of electric fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121647304.9U CN215646256U (en) | 2021-07-19 | 2021-07-19 | Touch control circuit of electric fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215646256U true CN215646256U (en) | 2022-01-25 |
Family
ID=79890903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121647304.9U Active CN215646256U (en) | 2021-07-19 | 2021-07-19 | Touch control circuit of electric fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215646256U (en) |
-
2021
- 2021-07-19 CN CN202121647304.9U patent/CN215646256U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104901385B (en) | Generator energy managing device and electricity generation system | |
| CN101026917A (en) | Solar LED lamp circuit | |
| US7839115B2 (en) | Power switching apparatus for natural energy power supply | |
| CN109587881A (en) | A kind of multichannel MPPT control circuit | |
| CN215646256U (en) | Touch control circuit of electric fan | |
| CN104079044B (en) | A kind of charger circuit of multivoltage compatibility | |
| CN209282907U (en) | A kind of solar street light power supply system | |
| CN203491682U (en) | Protection circuit for tandem type lithium ion battery set | |
| CN102752935A (en) | Solar light-emitting diode (LED) lamp controller | |
| CN113966052B (en) | Intelligent control circuit | |
| CN106255278B (en) | A kind of emergency LED lighting circuit with real time protection | |
| CN210137473U (en) | Driving circuit of emergency lighting lamp | |
| CN109936895A (en) | Solar street light intelligent control circuit | |
| CN215646342U (en) | Control circuit of lithium electric fan and electric fan | |
| CN207234501U (en) | A kind of accumulator super-charge of solar cell, which is crossed, puts control circuit | |
| CN205430711U (en) | Portable power source circuit and lamps and lanterns of lamps and lanterns | |
| CN210016661U (en) | Integral type solar street lamp controller | |
| CN109005619A (en) | A kind of LED drive chip with management of charging and discharging function | |
| CN204634096U (en) | Novel firefighting extra exit emergency light circuit | |
| CN220023125U (en) | Control circuit of solar street lamp | |
| CN205579433U (en) | Automatically controlled solar street lamp | |
| CN219086826U (en) | Charging circuit and electric appliance | |
| CN215344056U (en) | Battery charging device | |
| CN212851112U (en) | Solar street lamp controller with sectional control of output current | |
| CN215221278U (en) | Circuit structure of anion generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |