Control circuit applied to fan

Abstract

The utility model discloses a control circuit applied to a fan, which comprises a micro-control unit, a motor working circuit, a battery protection circuit, a charging working circuit and a light bar working circuit, a pin VDD of the micro-control unit is connected with a diode D9 and a capacitor C13, the capacitor C13 is grounded, the diode D9 is connected with the charging working circuit through a pin VBAT, the motor working circuit is connected with the pin VBAT, and the battery protection circuit is connected with the charging working circuit. The capacitor C13 is connected in parallel with the diode D9; a pin VSS of the micro-control unit is grounded; a pin PA6, a pin PB2 and a pin PA3 of the micro-control unit are connected with a motor working circuit; a pin PA7, a pin PB0 and a pin PA5 of the micro-control unit are connected with the charging working circuit; a pin PB3 and a pin PA4 of the micro-control unit are connected with the battery protection circuit; a pin PB1 of the micro-control unit is connected with the light bar working circuit; and a pin PA1, a pin PB5 and a pin PB4 of the micro-control unit are connected with light emitting diodes. By optimizing circuit design and an intelligent control strategy, the performance of the fan and the user experience are improved.

Description

Technical Field

[0001] The utility model relates to the field of fans, and in particular to a control circuit applied to a fan. Background Art

[0002] A fan is a household appliance that uses an electric motor to drive the blades to rotate to accelerate the flow of air. It is mainly used to cool down and circulate air. Nowadays, people's lives are becoming more and more intelligent, and products that are more conducive to people's lives are more in demand in the market.

[0003] The existing fan circuit has a complex structure and high cost. Summary of the invention

[0004] The purpose of the utility model is to provide a control circuit applied to a fan to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: a control circuit applied to a fan, including a micro control unit, a motor working circuit, a battery protection circuit, a charging working circuit and a light bar working circuit, the pin VDD of the micro control unit is connected with a diode D9 and a capacitor C13, the capacitor C13 is grounded, the diode D9 is connected to the charging working circuit through the pin VBAT, the motor working circuit is connected to the pin VBAT, and the capacitor C13 is connected in parallel with the diode D9; the pin VSS of the micro control unit is grounded; the pin PA6, the pin PB2, and the pin PA3 of the micro control unit are all connected to the motor working circuit; the pin PA7, the pin PB0, and the pin PA5 of the micro control unit are all connected to the charging working circuit; the pin PB3 and the pin PA4 of the micro control unit are all connected to the battery protection circuit; the pin PB1 of the micro control unit is connected to the light bar working circuit; the pin PA1, the pin PB5, and the pin PB4 of the micro control unit are all connected with a light emitting diode.

[0006] Compared with the prior art, the utility model has the advantages of simplifying the circuit structure and reducing costs: by integrating the microcontroller unit to centrally manage the work of multiple systems such as motor operation, battery protection, charging and light bar, it replaces the complex layout of multiple independent controllers that may be required in traditional fans, effectively reducing the complexity of the circuit and production costs. Improve system integration and intelligence: The microcontroller unit is connected to the motor working circuit, battery protection circuit, charging working circuit and light bar working circuit through its multiple pins, realizing comprehensive control of the fan operation status, including wind speed regulation, battery power monitoring, intelligent charging management and lighting effect control, etc., enhancing the intelligent function of the fan and improving the user experience. Enhance system stability and safety: The circuit is designed with a diode D9 and a capacitor C13. The diode D9 is used to protect the circuit from reverse voltage shocks, and the capacitor C13 helps to filter and stabilize the voltage to ensure the stability of the power supply. At the same time, the introduction of the battery protection circuit can effectively prevent overcharging and over-discharging, extend the battery life, and increase the safety and reliability of use.

[0007] In some embodiments of the utility model, the motor working circuit includes a power management chip, the pin VIN of the power management chip is connected to the positive power supply, the positive power supply is also connected to a capacitor C5 and a resistor R3, the capacitor C5 is connected in parallel with the resistor R3; a resistor R2 is also connected in series between the positive power supply and the resistor R3, and the capacitor C5 and the resistor R3 are both grounded; the pins LED1 and LED3 of the power management chip are respectively connected to the pins PA7 and PB0 of the microcontroller unit, and the pin LED2 of the power management chip is connected to the pin VBAT. This embodiment significantly improves the energy efficiency management capability of the circuit by integrating the power management chip in the motor working circuit. The pin VIN of the power management chip is directly connected to the positive power supply, and combined with the parallel design of the capacitor C5 and the resistor R3, the filtering and voltage stabilization of the power input end are effectively realized, and the stability and efficiency of the motor operation are guaranteed. At the same time, through the series connection of the resistor R2, the current control capability of the circuit is further enhanced, and the damage to the circuit caused by the instantaneous high voltage is avoided.

[0008] In some embodiments of the utility model, the battery protection circuit includes a battery protection chip, and the battery protection chip is connected to the pin VBAT. The battery protection chip is introduced into the battery protection circuit to provide a strong safety guarantee for the power supply system of the fan. The chip is directly connected to the pin VBAT, and can accurately monitor the voltage and current conditions of the battery, and realize automatic protection against various abnormal conditions such as overcharging, over-discharging, and short circuit, thereby significantly extending the battery life, reducing the safety hazards caused by battery failure, and enhancing the user's sense of security during use.

[0009] In some embodiments of the utility model, the model of the microcontroller unit is NY8A051H-SOP16. A microcontroller unit of model NY8A051H-SOP16 is used, and this model is selected because of its high performance, low power consumption and rich peripheral interfaces. The SOP16 package makes the circuit board layout more compact, which is conducive to reducing the product volume and improving space utilization. At the same time, the powerful processing power of the microcontroller unit supports the operation of complex algorithms, providing a solid foundation for the intelligent function expansion of the fan.

[0010] In some embodiments of the utility model, the model of the power management chip is IP5306. IP5306 is selected as the power management chip. The chip is known for its high integration and efficient power conversion rate, and can well meet the power supply requirements of the fan in different working modes. Its built-in multiple protection mechanisms, such as over-temperature protection, short-circuit protection, etc., ensure the stable operation of the circuit under complex working conditions and improve the reliability and durability of the entire system.

[0011] In some embodiments of the utility model, the battery protection chip model is XB8608AJ. The battery protection chip model XB8608AJ is used. The chip is designed for lithium-ion batteries, has precise voltage and current detection functions, and can accurately execute battery protection strategies. It can effectively prevent the battery from exceeding the safety range during charging and discharging, ensure the long-term healthy operation of the battery, reduce the risk of battery damage, and extend the overall service life of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is the connection schematic diagram of the microcontroller unit;

[0013] Figure 2 The schematic diagram of the charging circuit connection;

[0014] Figure 3 Schematic diagram for connecting the light bar;

[0015] Figure 4 It is the charging circuit connection schematic diagram;

[0016] Figure 5 This is the schematic diagram of the motor working circuit. DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0018] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific protection scope of the present invention.

[0019] It should be noted that the terms "first", "second", etc. in the specification and claims of the present utility model are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0020] The terms "including" and "having" and any variations thereof in the specification and claims of the present invention are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0021] like Figure 1-5 As shown, a control circuit applied to a fan includes a micro control unit, a motor working circuit, a battery protection circuit, a charging working circuit and a light bar working circuit, wherein a pin VDD of the micro control unit is connected to a diode D9 and a capacitor C13, the capacitor C13 is grounded, the diode D9 is connected to the charging working circuit through a pin VBAT, the motor working circuit is connected to the pin VBAT, and the capacitor C13 is connected in parallel with the diode D9; a pin VSS of the micro control unit is grounded; pins PA6, PB2 and PA3 of the micro control unit are all connected to the motor working circuit; pins PA7, PB0 and PA5 of the micro control unit are all connected to the charging working circuit; pins PB3 and PA4 of the micro control unit are all connected to the battery protection circuit; pin PB1 of the micro control unit is connected to the light bar working circuit; pins PA1, PB5 and PB4 of the micro control unit are all connected to light emitting diodes.

[0022] In the above structure: by integrating the microcontroller unit to centrally manage the work of multiple systems such as motor operation, battery protection, charging and light bar, the complex layout of multiple independent controllers that may be required in traditional fans is replaced, effectively reducing the complexity of the circuit and production costs. Improve system integration and intelligence: The microcontroller unit is connected to the motor working circuit, battery protection circuit, charging working circuit and light bar working circuit through its multiple pins, realizing comprehensive control of the fan operation status, including wind speed adjustment, battery power monitoring, intelligent charging management and lighting effect control, etc., enhancing the intelligent function of the fan and improving the user experience. Enhance system stability and safety: The circuit is designed with diode D9 and capacitor C13. Diode D9 is used to protect the circuit from reverse voltage shock, and capacitor C13 helps to filter and stabilize the voltage to ensure the stability of the power supply. At the same time, the introduction of the battery protection circuit can effectively prevent overcharging and over-discharging, extend the battery life, and increase the safety and reliability of use.

[0023] In some embodiments of the utility model, the motor working circuit includes a power management chip, the pin VIN of the power management chip is connected to the positive power supply, the positive power supply is also connected to a capacitor C5 and a resistor R3, and the capacitor C5 is connected in parallel with the resistor R3; a resistor R2 is also connected in series between the positive power supply and the resistor R3, and the capacitor C5 and the resistor R3 are both grounded; the pins LED1 and LED3 of the power management chip are respectively connected to the pins PA7 and PB0 of the microcontroller unit, and the pin LED2 of the power management chip is connected to the pin VBAT. This embodiment significantly improves the energy efficiency management capability of the circuit by integrating the power management chip in the motor working circuit. The pin VIN of the power management chip is directly connected to the positive power supply, and combined with the parallel design of the capacitor C5 and the resistor R3, the filtering and voltage stabilization of the power input end are effectively realized, and the stability and efficiency of the motor operation are guaranteed. At the same time, through the series connection of the resistor R2, the current control capability of the circuit is further enhanced, and the damage to the circuit caused by the instantaneous high voltage is avoided.

[0024] In some embodiments of the utility model, the battery protection circuit includes a battery protection chip, and the battery protection chip is connected to the pin VBAT. The battery protection chip is introduced into the battery protection circuit to provide a strong safety guarantee for the power supply system of the fan. The chip is directly connected to the pin VBAT, and can accurately monitor the voltage and current conditions of the battery, and realize automatic protection against various abnormal conditions such as overcharging, over-discharging, and short circuit, thereby significantly extending the battery life, reducing the safety hazards caused by battery failure, and enhancing the user's sense of security during use.

[0025] In some embodiments of the utility model, the model of the microcontroller unit is NY8A051H-SOP16. The microcontroller unit of model NY8A051H-SOP16 is adopted, and this model is selected because of its high performance, low power consumption and rich peripheral interfaces. The SOP16 packaging form makes the circuit board layout more compact, which is conducive to reducing the product volume and improving space utilization. At the same time, the powerful processing power of the microcontroller unit supports the operation of complex algorithms, providing a solid foundation for the intelligent function expansion of the fan.

[0026] In some embodiments of the utility model, the model of the power management chip is IP5306. IP5306 is selected as the power management chip. The chip is known for its high integration and efficient power conversion rate, and can well meet the power supply requirements of the fan in different working modes. Its built-in multiple protection mechanisms, such as over-temperature protection, short-circuit protection, etc., ensure the stable operation of the circuit under complex working conditions and improve the reliability and durability of the entire system.

[0027] In some embodiments of the utility model, the model of the battery protection chip is XB8608AJ. The battery protection chip of model XB8608AJ is used. The chip is designed for lithium-ion batteries, has precise voltage and current detection functions, and can accurately execute battery protection strategies. It can effectively prevent the battery from exceeding the safety range during charging and discharging, ensure the long-term healthy operation of the battery, reduce the risk of battery damage, and extend the overall service life of the product.

[0028] The above describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A control circuit applied to a fan, comprising a micro control unit, a motor working circuit, a battery protection circuit, a charging working circuit and a light bar working circuit, characterized in that: The pin (VDD) of the micro control unit is connected to a diode (D9) and a capacitor (C13), the capacitor (C13) is grounded, the diode (D9) is connected to the charging working circuit via a pin (VBAT), the motor working circuit is connected to the pin (VBAT), and the capacitor (C13) is connected in parallel to the diode (D9); the pin (VSS) of the micro control unit is grounded; the pins (PA6), (PB2), and (PA3) of the micro control unit are all connected to the motor working circuit; the pins (PA7), (PB0), and (PA5) of the micro control unit are all connected to the charging working circuit; the pins (PB3) and (PA4) of the micro control unit are all connected to the battery protection circuit; the pin (PB1) of the micro control unit is connected to the light bar working circuit; the pins (PA1), (PB5), and (PB4) of the micro control unit are all connected to light emitting diodes.

2. The control circuit applied to a fan according to claim 1, characterized in that: The motor working circuit comprises a power management chip, wherein a pin (VIN) of the power management chip is connected to a positive power supply, the positive power supply is also connected to a capacitor (C5) and a resistor (R3), the capacitor (C5) and the resistor (R3) are connected in parallel; a resistor (R2) is also connected in series between the positive power supply and the resistor (R3), the capacitor (C5) and the resistor (R3) are both grounded; a pin (LED1) and a pin (LED3) of the power management chip are respectively connected to a pin (PA7) and a pin (PB0) of the micro control unit, and a pin (LED2) of the power management chip is connected to the pin (VBAT).

3. The control circuit applied to a fan according to claim 1, characterized in that: The battery protection circuit includes a battery protection chip, and the battery protection chip is connected to the pin (VBAT).

4. The control circuit applied to a fan according to claim 1, characterized in that: The model of the microcontroller unit is NY8A051H-SOP16.

5. The control circuit applied to a fan according to claim 2, characterized in that: The model of the power management chip is IP5306.

6. The control circuit applied to a fan according to claim 3, characterized in that: The model of the battery protection chip is XB8608AJ.

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