CN218958796U

CN218958796U - Folding fan based on DCDC boost circuit

Info

Publication number: CN218958796U
Application number: CN202223314088.3U
Authority: CN
Inventors: 陈伟健
Original assignee: Shenzhen Chichuangda Technology Co ltd
Current assignee: Shenzhen Chichuangda Technology Co ltd
Priority date: 2022-12-09
Filing date: 2022-12-09
Publication date: 2023-05-02
Anticipated expiration: 2032-12-09

Abstract

The utility model discloses a folding fan based on a DCDC booster circuit, which comprises a single-phase motor, a TYPE-C interface, a motor driving interface, a potentiometer, a DCDC booster circuit, an MCU and a buffer starting regulating circuit, wherein the DCDC booster circuit comprises a booster chip, the TYPE-C interface is connected with the DCDC booster circuit and the MCU and is used for externally connecting a 5V power supply to supply power for the DCDC booster circuit and the MCU; the output end of the DCDC booster circuit is connected with a potentiometer, and the potentiometer is connected with a single-phase motor through a motor driving interface; the buffer starting regulating circuit is connected with the signal output end of the MCU and the FB end of the boosting chip. The utility model is realized by adopting a single-phase motor, the cost is lower, and the product competitiveness is improved; can realize small-size lightweight, can significantly reduce folding fan volume, efficient, control mode is simple.

Description

Folding fan based on DCDC boost circuit

Technical Field

The utility model relates to the technical field of small household appliances, in particular to a folding fan based on a DCDC booster circuit.

Background

The traditional folding fan basically uses a three-phase motor, and the three-phase motor has the advantages of high power and the like. However, the three-phase motor of the traditional scheme is large in size, heavy and high in cost.

Disclosure of Invention

The technical problem to be solved by the embodiment of the utility model is to provide a folding fan based on a DCDC booster circuit, so that the volume is reduced and the cost is reduced.

In order to solve the technical problems, the embodiment of the utility model provides a folding fan based on a DCDC booster circuit, which comprises a single-phase motor, a TYPE-C interface, a motor driving interface, a potentiometer, a DCDC booster circuit, an MCU and a buffer starting regulating circuit, wherein the DCDC booster circuit comprises a booster chip, the TYPE-C interface is connected with the DCDC booster circuit and the MCU and is used for externally connecting a 5V power supply to supply power for the DCDC booster circuit and the MCU; the output end of the DCDC booster circuit is connected with a potentiometer, and the potentiometer is connected with a single-phase motor through a motor driving interface; the buffer starting regulating circuit is connected with the signal output end of the MCU and the FB end of the boosting chip.

Further, the buffer starting regulating circuit comprises a resistor R1, a resistor R2, a resistor R5, a resistor R6, a resistor R7 and a MOS tube Q2, one end of the resistor R5 and one end of the resistor R7 are connected with the signal output end of the MCU, the other end of the resistor R7 is grounded and the S electrode of the MOS tube Q2, and the other end of the resistor R5 is connected with the G electrode of the MOS tube Q2; one end of the resistor R6 is connected with the D pole of the MOS tube Q2; the other end of the resistor R6 is connected with the FB end of the boost chip, grounded through the resistor R2 and connected with the output end of the DCDC boost circuit through the resistor R1.

Further, the motor driving device also comprises a capacitor EC4 and a capacitor EC5, wherein one end of the capacitor EC4 is grounded after the capacitor EC5 is connected in parallel, and the other end of the capacitor EC4 is connected with the positive electrode of the motor driving interface.

Further, the MCU adopts an XMC8P53S6 chip.

Further, the boosting chip adopts a CN5120 chip.

The beneficial effects of the utility model are as follows: the utility model is realized by adopting a single-phase motor, the cost is lower, and the product competitiveness is improved; the utility model adopts the single-phase single machine to realize the miniaturization and light weight, can greatly reduce the volume of the folding fan, and has high efficiency and simple control mode.

Drawings

Fig. 1 is a circuit diagram of a folded fan based on a DCDC boost circuit in accordance with an embodiment of the present utility model.

Fig. 2 is a schematic diagram of a folded fan based on a DCDC boost circuit in accordance with an embodiment of the present utility model.

Detailed Description

It should be noted that, without conflict, the embodiments and features of the embodiments in the present application may be combined with each other, and the present utility model will be further described in detail with reference to the drawings and the specific embodiments.

In the embodiment of the present utility model, if there is a directional indication (such as up, down, left, right, front, and rear … …) only for explaining the relative positional relationship, movement condition, etc. between the components in a specific posture (as shown in the drawings), if the specific posture is changed, the directional indication is correspondingly changed.

In addition, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implying an indication of the number of features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.

Referring to fig. 1, the folding fan based on the DCDC boost circuit in the embodiment of the present utility model includes a single-phase motor, a TYPE-C interface, a motor driving interface, a potentiometer, a DCDC boost circuit, an MCU, and a buffer start adjusting circuit. The DCDC boost circuit is of conventional design, and comprises a boost chip. The DCDC booster circuit can adopt the existing 5V-to-12V booster circuit.

The TYPE-C interface is connected with the DCDC boost circuit and the MCU and used for being externally connected with a 5V power supply to supply power for the DCDC boost circuit and the MCU. Through the TYPE-C interface, the folding fan can be connected with a 5V power supply such as a charger, and the flexibility and portability of the folding fan are improved.

The output end of the DCDC booster circuit is connected with a potentiometer, and the potentiometer is connected with a single-phase motor through a motor driving interface; the buffer starting regulating circuit is connected with the signal output end of the MCU and the FB end of the boosting chip. The potentiometer plays a role of separating a switch, and the speed regulation and closing functions of the fan can be realized through the potentiometer.

The working principle of the utility model is shown in figure 2, and the 5V direct current power supply is boosted to buffer voltage through the DCDC booster circuit, so that the single-phase motor is started; after the single-phase motor is started, the MCU adjusts a voltage feedback circuit of the DCDC booster circuit to output 12V target voltage, and the single-phase motor is started normally, so that the current of the single-phase motor during starting is reduced.

The buffer starting regulating circuit comprises a resistor R1, a resistor R2, a resistor R5, a resistor R6, a resistor R7 and a MOS tube Q2, wherein one end of the resistor R5 and one end of the resistor R7 are connected with the signal output end of the MCU, the other end of the resistor R7 is grounded and the S electrode of the MOS tube Q2, and the other end of the resistor R5 is connected with the G electrode of the MOS tube Q2; one end of the resistor R6 is connected with the D pole of the MOS tube Q2; the other end of the resistor R6 is connected with the FB end of the boost chip, grounded through the resistor R2 and connected with the output end of the DCDC boost circuit through the resistor R1.

The control principle of the utility model is as follows:

(1) during power-up, 5V is boosted by the DCDC boost circuit, and the FB feedback controls the boosted voltage to be about 10V through the partial pressure of R1 and R2. The single-phase motor is started by supplying power to the single-phase motor at 10V. Because the pressure difference is small, the starting current is not large, the power loss is small, but the rotating speed is not fast. (2) After 5 seconds, the singlechip outputs high level to open the MOS tube, at the moment, R2 and R6 are connected in parallel, the resistance value is improved, and after FB feedback, the boost voltage can be increased to 12V. The single-phase motor also speeds up due to the increase in voltage and current.

As an implementation manner, the folding fan based on the DCDC boost circuit further comprises a capacitor EC4 and a capacitor EC5, wherein the one end of the capacitor EC4 and the one end of the capacitor EC5 are grounded after being connected in parallel, and the other end of the capacitor EC4 and the one end of the capacitor EC5 are connected with the positive electrode (namely 1 pin) of the motor driving interface.

As an embodiment, the MCU employs an XMC8P53S6 chip.

As an embodiment, a CN5120 chip is used as the booster chip.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents.

Claims

1. The folding fan based on the DCDC booster circuit is characterized by comprising a single-phase motor, a TYPE-C interface, a motor driving interface, a potentiometer, a DCDC booster circuit, an MCU and a buffer starting regulating circuit, wherein the DCDC booster circuit comprises a booster chip, the TYPE-C interface is connected with the DCDC booster circuit and the MCU and is used for being externally connected with a 5V power supply to supply power for the DCDC booster circuit and the MCU; the output end of the DCDC booster circuit is connected with a potentiometer, and the potentiometer is connected with a single-phase motor through a motor driving interface; the buffer starting regulating circuit is connected with the signal output end of the MCU and the FB end of the boosting chip.

2. The folding fan based on the DCDC booster circuit as set forth in claim 1, wherein the buffer starting adjusting circuit comprises a resistor R1, a resistor R2, a resistor R5, a resistor R6, a resistor R7 and a MOS tube Q2, one end of the resistor R5 and one end of the resistor R7 are connected with the signal output end of the MCU, the other end of the resistor R7 is grounded and the S electrode of the MOS tube Q2, and the other end of the resistor R5 is connected with the G electrode of the MOS tube Q2; one end of the resistor R6 is connected with the D pole of the MOS tube Q2; the other end of the resistor R6 is connected with the FB end of the boost chip, grounded through the resistor R2 and connected with the output end of the DCDC boost circuit through the resistor R1.

3. The folding fan based on the DCDC boost circuit of claim 1, further comprising a capacitor EC4 and a capacitor EC5, wherein the capacitor EC4 and the capacitor EC5 are connected in parallel and then are grounded at one end, and the other end is connected with the positive electrode of the motor driving interface.

4. The DCDC boost circuit-based folding fan of claim 1, wherein the MCU employs an XMC8P53S6 chip.

5. The DCDC boost circuit based folding fan of claim 1, wherein the boost chip is CN5120 chip.