阅读说明：本技术 直流变频风扇灯过温保护电路 (Over-temperature protection circuit of direct-current variable-frequency fan lamp ) 是由 吴靖琪 于 2019-09-16 设计创作，主要内容包括：本发明公开了一种直流变频风扇灯过温保护电路,包括电源模块,所述电源模块,所述电源模块上设有整流桥和恒压驱动芯片,所述电源模块分别电性连接有单片机和电机驱动模块,所述电机驱动模块上设有三相无刷驱动芯片,所述电机驱动模块上设有三个并连的单通道高压功率IPM模块,所述电机驱动模块电性连接有电机,本发明带有433MHz无线接收模块,过温保护模块用于检测IPM的温度,单片机上电性连接有过温保护模块和电机驱动模块,通过与单片机配合,可以实现在IPM温度高于120摄氏度时对电机进行降速,在IPM模块温度较低时对电机进行加速,起到了保护IPM模块寿命的作用,防止IPM模块过热烧毁。(The invention discloses an over-temperature protection circuit of a direct-current variable-frequency fan lamp, which comprises a power module, wherein the power module is provided with a rectifier bridge and a constant-voltage driving chip, the power module is respectively and electrically connected with a single chip microcomputer and a motor driving module, the motor driving module is provided with a three-phase brushless driving chip, the motor driving module is provided with three single-channel high-voltage power IPM modules which are connected in parallel, and the motor driving module is electrically connected with a motor. And the IPM module is prevented from being burnt out due to overheating.)

1. The utility model provides a direct current frequency conversion fan lamp excess temperature protection circuit, includes power module (3), its characterized in that: power module (3), be equipped with rectifier bridge (31) and constant voltage drive chip (32) on power module (3), power module (3) electric connection respectively has singlechip (1) and motor drive module (2), be equipped with three-phase brushless drive chip (21) on motor drive module (2), be equipped with IPM module (22) of three parallel connection on motor drive module (2), motor drive module (2) electric connection has the motor, electric connection has excess temperature protection module (6) on the P1.7 interface of singlechip (1), electric connection has receiving module (4) on the P1.6 interface of singlechip (1), electric connection has relay drive chip (5) on singlechip (1), motor drive module (2) and singlechip (1) electric connection.

2. The over-temperature protection circuit of the DC frequency conversion fan lamp according to claim 1, characterized in that: the relay driving chip (5) is electrically connected with a lamp, and the relay driving chip (5) is electrically connected with a buzzer.

3. The over-temperature protection circuit of the DC frequency conversion fan lamp according to claim 1, characterized in that: the model of the relay driving chip (5) is ULN2001, and the model of the receiving module (4) is 433-RF.

4. The over-temperature protection circuit of the DC frequency conversion fan lamp according to claim 1, characterized in that: the type of the single chip microcomputer (1) is SC92F 7251.

5. The over-temperature protection circuit of the DC frequency conversion fan lamp according to claim 1, characterized in that: the model of the constant voltage driving chip (32) is BP 2513.

6. The over-temperature protection circuit of the DC frequency conversion fan lamp according to claim 1, characterized in that: the IPM module (22) is BPP1N 5004D.

7. The over-temperature protection circuit of the DC frequency conversion fan lamp according to claim 1, characterized in that: the model of the three-phase brushless driving chip (21) is PT 2502.

Technical Field

The invention relates to the technical field of protection circuits, in particular to an over-temperature protection circuit of a direct-current variable-frequency fan lamp.

Background

The fan lamp is more and more widely applied due to the dual functions of illumination and fan, the existing fan lamp is internally sealed, the heat dissipation effect is not ideal, and the service life is short; when the motor is overheated, a protection circuit is not arranged to carry out speed reduction protection on the motor, so that the requirement for prolonging the service life is difficult to meet. Therefore, an over-temperature protection circuit of the direct-current variable-frequency fan lamp is provided.

Disclosure of Invention

The invention aims to provide an over-temperature protection circuit of a direct-current variable-frequency fan lamp, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a direct current frequency conversion fan lamp excess temperature protection circuit, includes power module, last rectifier bridge and the constant voltage driver chip of being equipped with of power module, power module electric connection has singlechip and motor driver module respectively, the last three-phase brushless driver chip that is equipped with of motor driver module, the last IPM module of three parallel connection that is equipped with of motor driver module, motor driver module electric connection has the motor, electric connection has excess temperature protection module on the P1.7 interface of singlechip, electric connection has receiving module on the P1.6 interface of singlechip, electric connection has relay driver chip on the singlechip, motor driver module and singlechip electric connection.

The purpose that this set up is that this direct current frequency conversion fan lamp excess temperature protection circuit has a receiving module, excess temperature protection module is used for detecting the temperature of IPM, electrically connected with excess temperature protection module and motor drive module on the singlechip, through cooperating with the singlechip, can realize carrying out the deceleration to the motor when IPM temperature is higher than 120 degrees centigrade, accelerate the motor when IPM module temperature is lower, played the effect of protection IPM module life-span, prevent that the IPM module from overheated the burning out.

Preferably, the relay driving chip is electrically connected with a lamp, and the relay driving chip is electrically connected with a buzzer.

Preferably, the model of the relay driving chip is ULN2001, and the model of the receiving module is 433-RF.

Preferably, the model of the single chip microcomputer is SC92F 7251.

Preferably, the model of the constant voltage driving chip is BP 2513.

Preferably, the IPM module is BPP1N5004D in model number.

Preferably, the model of the three-phase brushless driving chip is PT 2502.

Compared with the prior art, the invention has the beneficial effects that: the intelligent IPM temperature control system is provided with the receiving module, the over-temperature protection module is used for detecting the temperature of the IPM, the single chip microcomputer is electrically connected with the over-temperature protection module and the motor driving module, and the over-temperature protection module and the motor driving module are matched with the single chip microcomputer, so that the motor can be decelerated when the IPM temperature is higher than 120 ℃, and accelerated when the IPM temperature is lower, the service life of the IPM module is protected, and the IPM module is prevented from being burnt out due to overheating.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of an over-temperature protection module according to the present invention;

FIG. 3 is a schematic diagram of the structure of the single chip microcomputer of the invention;

FIG. 4 is a schematic diagram of a relay driver chip according to the present invention;

FIG. 5 is a schematic diagram of a receiving module according to the present invention;

FIG. 6 is a schematic diagram of a power module according to the present invention;

fig. 7 is a schematic structural diagram of a motor driving module according to the present invention.

In the figure: 1. a single chip microcomputer; 2. a motor drive module; 21. a three-phase brushless driving chip; 22. an IPM module; 3. a power supply module; 31. a rectifier bridge; 32. a constant voltage driving chip; 4. a receiving module; 5. a relay driver chip; 6. and an over-temperature protection module.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides a technical solution: the utility model provides a direct current frequency conversion fan lamp excess temperature protection circuit, includes power module 3, be equipped with rectifier bridge 31 and constant voltage driver chip 32 on power module 3, power module 3 electric connection has singlechip 1 and motor driver module 2 respectively, be equipped with three-phase brushless driver chip 21 on the motor driver module 2, be equipped with the IPM module 22 of three parallel connection on the motor driver module 2, 2 electric connection of motor driver module have the motor, electric connection has excess temperature protection module 6 on the P1.7 interface of singlechip 1, electric connection has receiving module 4 on the P1.6 interface of singlechip 1, electric connection has relay driver chip 5 on singlechip 1, motor driver module 2 and 1 electric connection of singlechip.

Specifically, the relay driving chip 5 is electrically connected with a lamp, and the relay driving chip 5 is electrically connected with a buzzer.

Specifically, the model of the relay driving chip 5 is ULN2001, and the model of the receiving module 4 is 433-RF.

Specifically, the type of the single chip microcomputer 1 is SC92F 7251.

Specifically, the model of the constant voltage driving chip 32 is BP 2513.

Specifically, the IPM module 22 has a model number BPP1N 5004D.

Specifically, the model of the three-phase brushless driving chip is PT 2502.

Specifically, during the use, this direct current frequency conversion fan lamp excess temperature protection circuit has receiving module 4, excess temperature protection module 6 is used for detecting the temperature of high-voltage power IPM module 22, electric connection has excess temperature protection module 6 and motor drive module 2 on singlechip 1, through cooperating with singlechip 1, can realize carrying out the deceleration to the motor when IPM module temperature is too high, accelerate the motor when IPM module temperature is lower, the effect of protection IPM module life-span has been played, prevent that IPM module from overheating to burn out.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.