Motor speed regulation circuit and heat dissipation device

Abstract

The utility model provides a motor speed regulation circuit and a heat dissipation device, and the motor speed regulation circuit comprises a motor, a bidirectional thyristor VS, a bidirectional trigger diode VD, an adjustable potentiometer RP, and a capacitor C. The rotating speed of the motor is controlled by adjusting the voltage output of the bidirectional thyristor, the heat dissipation mode that all fans of an energy storage, current transformation and voltage boosting integrated cabin in the related technology need to be started and stopped at the same time is optimized, the impact current generated when the fans are started is reduced, damage to components in a circuit is reduced, and the service life of the fan is prolonged. And different rotating speeds are adopted for working at different temperatures, so that the energy waste is reduced.

Description

Technical Field

[0001] The utility model relates to the field of energy storage, current conversion and voltage boosting, and in particular to a motor speed regulation circuit and a heat dissipation device. Background Art

[0002] In the related technology, the heat dissipation of the energy storage converter and booster is mainly achieved by ventilating and cooling the transformer through a cooling fan. The temperature and humidity are collected by a temperature and humidity sensor. Each group of cooling fans relies on a thermal relay. The power supply circuit is controlled by a contactor. The cooling fan measures the temperature of the transformer and the overload process of the transformer, and determines the start and stop of the cooling fan through logical judgment.

[0003] The above control method has the following disadvantages: since all cooling fans must start and stop at the same time, and the impact current generated when starting is relatively large, it often causes damage to the components in the circuit. When the temperature is between 45 and 55 degrees Celsius, the full work input method will bring huge energy waste and cause great difficulties in equipment maintenance.

[0004] How to controllably adjust the motor speed of the cooling fan is currently an urgent problem to be solved. Utility Model Content

[0005] The utility model aims to provide a motor speed regulation circuit, a heat dissipation device and an energy storage, current conversion and voltage boosting integrated machine.

[0006] In order to solve the above technical problems, the utility model provides a motor speed control circuit, comprising:

[0007] Motor, bidirectional thyristor VS, bidirectional trigger diode VD, adjustable potentiometer RP and capacitor C;

[0008] One end of the motor is electrically connected to a first terminal of an external alternating current, and the other end of the motor is electrically connected to a second terminal of the external alternating current through a bidirectional thyristor VS;

[0009] The adjustable potentiometer RP is connected in series with the capacitor C and then connected in parallel to the two ends of the bidirectional thyristor VS;

[0010] One end of the bidirectional trigger diode VD is electrically connected between the adjustable potentiometer RP and the capacitor C, and the other end is electrically connected to the control electrode of the bidirectional thyristor VS.

[0011] Further, the adjustable potentiometer RP is configured to adjust a charging time constant of the capacitor C when being rotated.

[0012] Furthermore, the minimum resistance of the adjustable potentiometer RP is greater than 0Ω.

[0013] Furthermore, a resistor R is connected in series between the adjustable potentiometer RP and the capacitor C;

[0014] The bidirectional trigger diode VD is electrically connected between the resistor R and the capacitor C.

[0015] Furthermore, the bidirectional trigger diode VD is electrically connected between the adjustable potentiometer RP and the capacitor C after being connected in series with a current limiting resistor.

[0016] Furthermore, the number of the motors is N, where N is greater than or equal to 1.

[0017] Furthermore, when N is greater than 1, all of the motors are connected in parallel.

[0018] The utility model also provides a heat dissipation device, comprising:

[0019] A cooling fan and a motor speed control circuit as described above;

[0020] The motor is suitable for driving the cooling fan to rotate;

[0021] The adjustable potentiometer is configured to adjust the rotation speed of the cooling fan.

[0022] The utility model also provides an energy storage, current conversion and voltage boosting integrated machine, comprising:

[0023] Cabin, transformer and heat sink;

[0024] The transformer is built into the cabin;

[0025] The heat dissipation fan of the heat dissipation device is embedded in the wall of the cabin body and is communicated with the outside.

[0026] Furthermore, the energy storage, current conversion and voltage boosting integrated device also includes an AC source;

[0027] The AC source is configured to supply power to the heat dissipation device.

[0028] The beneficial effect of the utility model is that the utility model provides a motor speed control circuit, a heat dissipation device and an energy storage, current conversion and boosting integrated machine, wherein the motor speed control circuit includes: a motor, a bidirectional thyristor VS, a bidirectional trigger diode VD, an adjustable potentiometer RP and a capacitor C; one end of the motor is electrically connected to the first terminal of the external alternating current, and the other end of the motor is electrically connected to the second terminal of the external alternating current through the bidirectional thyristor VS; the adjustable potentiometer RP is connected in series with the capacitor C and then connected in parallel to the two ends of the bidirectional thyristor VS; one end of the bidirectional trigger diode VD is electrically connected between the adjustable potentiometer RP and the capacitor C, and the other end is electrically connected to the control electrode of the bidirectional thyristor VS. The speed of the motor is controlled by adjusting the voltage output of the bidirectional thyristor, and the heat dissipation method of all fans in the energy storage, current conversion and boosting integrated cabin in the related technology must be started and stopped at the same time is optimized, the impact current when the fan is started is reduced, and the damage to the components in the circuit is reduced, so that different speeds are used to work at different temperatures, reducing energy waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0030] Figure 1 It is a circuit principle schematic diagram of the motor speed regulation circuit provided by the embodiment of the utility model.

[0031] Figure 2 This is a schematic diagram of the electrical control principle of the adjustable potentiometer provided in the embodiment of the utility model.

[0032] Figure 3 It is a structural schematic diagram of the energy storage, current conversion and boosting integrated machine provided in an embodiment of the utility model.

[0033] In the figure: 100, cabin; 200, cooling fan; FJB1, motor. DETAILED DESCRIPTION

[0034] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0035] Example

[0036] See also Figure 1-Figure 3At least one embodiment provides a motor speed control circuit, including: motor FJB1, bidirectional thyristor VS, bidirectional trigger diode VD, adjustable potentiometer RP and capacitor C; one end of the motor FJB1 is electrically connected to the first terminal of the external alternating current, and the other end of the motor FJB1 is electrically connected to the second terminal of the external alternating current through the bidirectional thyristor VS; the adjustable potentiometer RP is connected in series with the capacitor C and then connected in parallel to the two ends of the bidirectional thyristor VS; one end of the bidirectional trigger diode VD is electrically connected between the adjustable potentiometer RP and the capacitor C, and the other end is electrically connected to the control electrode of the bidirectional thyristor VS. The speed of the motor FJB1 is controlled by adjusting the voltage output of the bidirectional thyristor, and the heat dissipation method of all fans in the energy storage, conversion and boosting integrated cabin in the related technology is optimized, which reduces the impact current when the fan starts, reduces the damage to the components in the circuit, and uses different speeds to work at different temperatures, reducing energy waste.

[0037] The adjustable potentiometer RP is configured to adjust the charging time constant of the capacitor C when it is rotated.

[0038] It should be noted that the knob of the adjustable potentiometer RP is fixedly connected to the rotor of the micro motor FJB1, and the charging time constant of the capacitor C is adjusted by controlling the rotation angle of the micro motor FJB1 through the controller.

[0039] During specific use, the controller is also electrically connected to the temperature and humidity sensor, and controls the micro motor FJB1 through the comparison table of temperature and humidity parameters and rotation angles configured in the controller, so as to control the motor FJB1 to rotate at different speeds under different temperature and humidity conditions, thereby driving the cooling fan 200 to rotate, reducing energy waste.

[0040] In at least one embodiment, the minimum resistance of the adjustable potentiometer RP is greater than 0Ω. The minimum resistance of the adjustable potentiometer RP is greater than 0Ω, thereby preventing the capacitor C from being damaged.

[0041] In some embodiments, in order to ensure the normal operation of capacitor C, a resistor R is connected in series between the adjustable potentiometer RP and capacitor C; the bidirectional trigger diode VD is electrically connected between the resistor R and capacitor C. The resistor R is used to limit the capacitor C to prevent it from being damaged by large current.

[0042] In some embodiments, the bidirectional trigger diode VD is electrically connected between the adjustable potentiometer RP and the capacitor C after being connected in series with a current limiting resistor.

[0043] It should be noted that the number of the motors FJB1 is N, where N is greater than or equal to 1. When N is greater than 1, all the motors FJB1 are connected in parallel.

[0044] At least one embodiment further provides a heat dissipation device, including: a heat dissipation fan 200 and a motor speed control circuit as described above; the motor FJB1 is suitable for driving the heat dissipation fan 200 to rotate; the adjustable potentiometer is configured to adjust the speed of the heat dissipation fan 200. By adjusting the voltage output of the bidirectional thyristor to control the speed of the motor FJB1, the heat dissipation method in the related art in which all fans of the energy storage, current conversion and boosting integrated cabin are started and stopped at the same time is optimized, the impact current when the fan is started is reduced, the damage to the components in the circuit is reduced, and different speeds are used to work at different temperatures, thereby reducing energy waste.

[0045] At least one embodiment also provides an integrated energy storage, current conversion and boosting device, comprising: a cabin 100, a transformer and a heat dissipation device; the transformer is built into the cabin 100; the heat dissipation fan 200 of the heat dissipation device is embedded in the wall of the cabin 100 and is connected to the outside.

[0046] Wherein, the energy storage, current conversion and boosting integrated machine also includes an AC source; the AC source is configured to supply power to the heat dissipation device.

[0047] In summary, the utility model provides a motor speed control circuit, a heat dissipation device and an energy storage, current conversion and boosting integrated machine, wherein the motor speed control circuit includes: a motor FJB1, a bidirectional thyristor VS, a bidirectional trigger diode VD, an adjustable potentiometer RP and a capacitor C; one end of the motor FJB1 is electrically connected to the first terminal of the external alternating current, and the other end of the motor FJB1 is electrically connected to the second terminal of the external alternating current through the bidirectional thyristor VS; the adjustable potentiometer RP is connected in series with the capacitor C and then connected in parallel to the two ends of the bidirectional thyristor VS; one end of the bidirectional trigger diode VD is electrically connected between the adjustable potentiometer RP and the capacitor C, and the other end is electrically connected to the control electrode of the bidirectional thyristor VS. The speed of the motor FJB1 is controlled by adjusting the voltage output of the bidirectional thyristor, and the heat dissipation method of all fans in the energy storage, current conversion and boosting integrated cabin in the related technology is optimized, the impact current when the fan is started is reduced, and the damage to the components in the circuit is reduced, so that different speeds are used to work at different temperatures, reducing energy waste.

[0048] All devices (parts without specific structure) selected in this application are universal standard parts or parts known to those skilled in the art, and their structures and principles can be known by those skilled in the art through technical manuals or conventional experimental methods. In addition, the software programs involved in this application are all prior art, and this application does not involve any improvement to the software programs.

[0049] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0051] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0052] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0053] In addition, each functional unit in each embodiment of the present utility model may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0054] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A motor speed control circuit, characterized in that: include: Motor, bidirectional thyristor VS, bidirectional trigger diode VD, adjustable potentiometer RP and capacitor C; One end of the motor is electrically connected to a first terminal of an external alternating current, and the other end of the motor is electrically connected to a second terminal of the external alternating current through a bidirectional thyristor VS; The adjustable potentiometer RP is connected in series with the capacitor C and then connected in parallel to the two ends of the bidirectional thyristor VS; One end of the bidirectional trigger diode VD is electrically connected between the adjustable potentiometer RP and the capacitor C, and the other end is electrically connected to the control electrode of the bidirectional thyristor VS.

2. The motor speed control circuit according to claim 1, characterized in that: The adjustable potentiometer RP is configured to adjust the charging time constant of the capacitor C when being turned.

3. The motor speed control circuit according to claim 2, characterized in that: The minimum resistance of the adjustable potentiometer RP is greater than 0Ω.

4. The motor speed control circuit according to claim 2, characterized in that: A resistor R is also connected in series between the adjustable potentiometer RP and the capacitor C; The bidirectional trigger diode VD is electrically connected between the resistor R and the capacitor C.

5. The motor speed control circuit according to any one of claims 3 or 4, characterized in that: The bidirectional trigger diode VD is electrically connected between the adjustable potentiometer RP and the capacitor C after being connected in series with a current limiting resistor.

6. The motor speed control circuit according to claim 1, characterized in that: The number of the motors is N, where N is greater than or equal to 1.

7. The motor speed control circuit according to claim 6, characterized in that: When N is greater than 1, all of the motors are connected in parallel.

8. A heat dissipation device, characterized in that: include: A cooling fan and a motor speed control circuit as claimed in any one of claims 1 to 7; The motor is suitable for driving the cooling fan to rotate; The adjustable potentiometer is configured to adjust the rotation speed of the cooling fan.

Images