CN212875666U

CN212875666U - Full-wave rectifying circuit, circuit board and electronic pneumatic pump of pneumatic pump

Info

Publication number: CN212875666U
Application number: CN202021598458.9U
Authority: CN
Inventors: 唐朝
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-04
Filing date: 2020-08-04
Publication date: 2021-04-02
Anticipated expiration: 2030-08-04

Abstract

The utility model discloses a full-wave rectifying circuit, a circuit board and an electric pneumatic pump of a pneumatic pump, wherein the electric pneumatic pump comprises a full-wave rectification circuit board of the pneumatic pump or a full-wave rectification circuit board of the pneumatic pump, the full-wave rectification circuit board of the pneumatic pump is an integration of all electronic components of the full-wave rectification circuit except the motor M, the circuit board is welded on a conductive pin of the motor M, the circuit board is fixed on a shell of the pneumatic pump or is positioned in an external adapter, the full-wave rectification circuit of the pneumatic pump comprises a full-wave rectification module connected to an alternating-current circuit in parallel, a BUCK circuit with two ends electrically connected with the full-wave rectification module to form a loop and used for reducing voltage, and the motor M is connected with the BUCK circuit in parallel, the BUCK circuit comprises a first switch submodule which is connected with the full-wave rectification module in series, and the first switch submodule is used for switching on/off the BUCK circuit in a frequency manner. Compared with the prior art, the utility model has the advantages of take the BUCK circuit and carry out step-down processing, avoid the circuit to appear because of the condition of high temperature outage.

Description

Full-wave rectifying circuit, circuit board and electronic pneumatic pump of pneumatic pump

Technical Field

The utility model relates to a domestic appliance field relates to the pneumatic pump, especially relates to full wave rectifier circuit, circuit board and electronic pneumatic pump of pneumatic pump.

Background

The pneumatic pump is an inflation or air extraction device, and is driven by a direct current motor or an alternating current motor, and the direct current motor can be more exquisite.

The existing structure is that an alternating current series motor is directly adopted for driving, or alternating current is adopted for voltage transformation and rectification through an external power adapter and is switched on a machine body to be changed into direct current so as to provide electric energy for a direct current motor.

The existing transformation adopts a structure designed on a power line, for example, a plug is an AC-DC transformer, or a built-in circuit board is designed in a machine body, the voltage in the rectified circuit is divided by resistors through the rectification of complex electronic components, the working voltage of a motor is controlled, but the resistors are easy to generate heat in the voltage division work, so that the circuit is overheated and is powered off.

Patent No. CN210898967U provides an electric pneumatic pump, which uses a full-bridge rectifier bridge stack to perform ac-dc conversion operation, and is connected in series with a resistor for dividing voltage, but the resistor is easy to generate heat during operation, resulting in overheating and power failure of the circuit.

The full-wave rectifying circuit and the circuit board can avoid the circuit from being powered off due to heating.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a voltage reduction circuit who replaces resistance partial pressure is provided, full wave rectifier circuit, circuit board and the electronic pneumatic pump of the pneumatic pump of avoiding the circuit to lead to the outage because of generating heat.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a full-wave rectifying circuit of a pneumatic pump, comprising: the motor M is connected with the BUCK circuit in parallel, the BUCK circuit comprises a first switch submodule which is connected with the full-wave rectification module in series, and the first switch submodule is connected with the full-wave rectification module in a frequency on/off mode.

Furthermore, the first switch submodule comprises a level control switch, and the level control switch comprises a high-voltage switch diode; or the level control switch comprises a MOS tube.

Further, the first switch submodule comprises a P-channel MOS transistor.

Further, the first switch submodule comprises an N-channel MOS transistor.

Furthermore, the first switch submodule is integrated on the integrated module, an MOS drive control submodule for controlling the first switch submodule to open and close is simultaneously integrated on the integrated module, the MOS drive control submodule is connected with a grid G of the MOS transistor, the MOS drive control submodule controls a level signal, and the MOS drive control submodule provides a PWM signal for the grid G of the MOS transistor.

Furthermore, an overload protection submodule/an over-temperature protection submodule/an under-voltage protection submodule/a short circuit detection module is further integrated on the integrated module.

Further, the BUCK circuit comprises a diode D, an inductor L and an output capacitor C which are connected in series, a node between the inductor L and the diode D is connected with a source electrode S of an MOS (metal oxide semiconductor) tube, a cathode of the diode D is connected with the source electrode S, a node between an anode of the diode D and the output capacitor C is connected with a full-wave rectification module, the motor M is connected with two ends of the output capacitor C1 in parallel, and a drain electrode D of the MOS tube is electrically connected with the full-wave rectification module.

Further, the full-wave rectification module comprises a full-bridge rectification bridge stack.

Further, the full-wave rectification module is connected in parallel with the input capacitor C2.

The full-wave rectification circuit board of the pneumatic pump is characterized in that the full-wave rectification circuit of the pneumatic pump except the motor M is integrated on the circuit board, and the circuit board is welded on a conductive pin of the motor M.

The full-wave rectification circuit board of the pneumatic pump is characterized in that the full-wave rectification circuit motors M of the pneumatic pump are integrated on the circuit board, and the circuit board is fixed on a shell of the pneumatic pump.

The full-wave rectification circuit board of the pneumatic pump is characterized in that the full-wave rectification circuit except the motor M of the pneumatic pump is integrated on the circuit board, and the circuit board is arranged in an external adapter.

The electric pneumatic pump comprises the full-wave rectifying circuit of the pneumatic pump or the full-wave rectifying circuit board of the pneumatic pump.

Compared with the prior art, the utility model has the advantages of take the BUCK circuit and carry out step-down processing, avoid the circuit to appear because of the condition of high temperature outage.

Drawings

The present invention will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of illustrating the preferred embodiments and therefore should not be taken as limiting the scope of the invention, and further that, unless otherwise indicated, the drawings are only schematic in conceptually illustrating the composition or construction of the objects described and may contain exaggerated displays, and that the drawings are not necessarily drawn to scale.

FIG. 1 is one of the schematic circuit diagrams of a full-wave rectifier circuit;

FIG. 2 is a second schematic circuit diagram of a full-wave rectification circuit;

FIG. 3 is a schematic diagram of voltage changes before and after filtering in a first switch submodule;

fig. 4 is a schematic diagram of the voltage change before and after filtering in the motor M.

In the figure: 1. the circuit comprises a full-wave rectification module, 2, a first switch submodule, 3, diodes D, 4, inductors L, 5, output capacitors C1, 6, motors M, 7, an integration module, 8, input capacitors C2, 9, switch controllers, 10, resistors R, 11 and an MOS drive control submodule.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, and those skilled in the art will appreciate that these descriptions are illustrative only, exemplary and should not be construed as limiting the scope of the present invention.

It should be noted that: like reference numerals refer to like items in the following figures, and thus, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

In this embodiment, a full-wave rectification circuit, a circuit board, and an electric pneumatic pump of the pneumatic pump are mainly explained, which replace a voltage reduction circuit with resistor voltage division, and avoid the circuit from being powered off due to heat generation, as follows:

as shown in fig. 1 to 4, the full-wave rectification circuit of the pneumatic pump includes a full-wave rectification module 1 connected in parallel to the alternating current circuit, the full-wave rectification module 1 is connected to both ends of the BUCK circuit, and the motor M6 is connected in parallel to the BUCK circuit.

The BUCK circuit is connected to the full-wave rectification module 1 to form a loop, and the BUCK circuit is used for reducing the voltage in the motor M6.

Preferably, the full-wave rectifier module 1 comprises a full-bridge rectifier bridge stack.

In practical work, the electric pneumatic pump needs to be connected to a mains supply circuit for use, the full-wave rectification module 1 connected to the alternating-current circuit in parallel is connected to a plug wiring of the electric pneumatic pump in parallel, the plug of the electric pneumatic pump is connected with household 220V mains supply, namely the full-wave rectification circuit is connected with the mains supply circuit, and two ends of the full-wave rectification circuit are connected with a live wire end and a zero wire end of the mains supply.

The BUCK circuit comprises a first switch submodule 2, the first switch submodule 2 is connected with the full-wave rectification module 1 in series, and one end of the first switch submodule 2 is connected to the output end of the rectifier bridge stack.

Because the commercial power is single-phase alternating current of 220V, the direct current that forms after full-wave rectifier module 1 rectifies the alternating current is pulse direct current, and the waveform is impure, in order to avoid first switch submodule 2 to damage easily, be connected with input capacitor C28 in parallel on full-wave rectifier module 1, input capacitor C28 carries out filtering processing to the voltage on first switch submodule 2, guarantees that the voltage on first switch submodule 2 tends to stable.

The BUCK circuit further comprises a diode D3, an inductor L4 and an output capacitor C15 which are connected in series, a node between the negative electrodes of the inductor L4 and the diode D3 is connected to the other end of the first switch submodule 2, a node between the positive electrodes of the output capacitor C15 and the positive electrode of the diode D3 is connected to the input end of the full-wave rectification module 1, the motor M6 is connected to the output capacitor C15 in parallel, the output capacitor C15 conducts filtering processing on the voltage of the motor M6, the working voltage of the motor M6 is guaranteed to be stable, and the motor M6 is prevented from being burnt out due to unstable voltage.

Preferably, the inductor L4 can be replaced by a transformer.

The first switch submodule 2 comprises a level control switch comprising a high voltage switching diode.

The first switch submodule 2 comprises an MOS (metal oxide semiconductor) tube, the MOS tube is integrated on the integrated module 7, meanwhile, the integrated module 7 is integrated with an MOS drive control submodule 11, the MOS drive control submodule 11 is connected with a grid G of the MOS tube, the MOS drive control submodule 11 provides a PWM (pulse width modulation) signal for the grid G of the MOS tube and controls the on-off of a source electrode S end and a drain electrode D end of the MOS tube.

In order to prevent the MOS drive control submodule 11 on the integrated module 7 from being burnt out due to high voltage and high frequency operation, a resistor R10 for dividing voltage is connected in series on the MOS drive control submodule 11.

An overload protection submodule/an over-temperature protection submodule/an under-voltage protection submodule/a short-circuit detection module is further integrated on the integrated module 7, when the circuit system is abnormal in overload/over-temperature/under-voltage/short-circuit and the like, the integrated module 7 transmits a PWM signal to the MOS drive control submodule 11, and the MOS drive control submodule 11 controls the MOS tube to be disconnected between the source electrode S end and the drain electrode D end so as to protect the circuit.

Preferably, the integrated module 7 may use YT2209A, SR2286F1, SR2296G1, and other types of chips.

The MOS tube is an N-channel MOS tube opened by a high-voltage level, a drain electrode D of the NMOS tube is connected with an output end of the full-wave rectification module 1, a source electrode S of the NMOS tube is connected with a node between an inductor L4 and a diode D3 in the BUCK circuit, and a negative electrode of a diode D3 is connected with the source electrode S.

Preferably, the MOS tube can also be a P-channel MOS tube opened at a low voltage level.

The full-wave rectifying circuit except the motor M6M can be integrated on a circuit board, the circuit board is fixed on a conductive pin of the motor M6 by welding, the motor M6 is fixed in the shell of the pneumatic pump, and the circuit board is fixed on the shell of the pneumatic pump or arranged in an external adapter.

In the electric pneumatic pump circuit, in order to prevent the electric pneumatic pump from starting working when the power supply is switched on, a switch controller 9 for manually controlling the on-off of the full-wave rectification circuit is connected in parallel in the full-wave rectification circuit, and the switch controller 9 comprises a toggle switch or a key switch or a movable on-off button switch.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the products of the present invention are usually placed when used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the term refers must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

The above is to the full wave rectifier circuit, circuit board and the electronic pneumatic pump of the pneumatic pump that the utility model provides a detailed introduction has been carried out, and it is right that this paper has used specific individual example the utility model discloses a principle and implementation mode have been elucidated, and the description of above embodiment is only used for helping understanding the utility model discloses and the core thought, should point out, to the ordinary skilled person in this technical field, under the prerequisite that does not deviate from the utility model discloses the principle can also be right the utility model discloses a plurality of improvements and embellishments can be carried out, these improvements and embellishments also fall into the scope of protection of the claims of the utility model.

Claims

1. A full-wave rectifying circuit of a pneumatic pump, comprising: the motor M is connected with the BUCK circuit in parallel, the BUCK circuit comprises a first switch submodule which is connected with the full-wave rectification module in series, and the first switch submodule is connected with the full-wave rectification module in a frequency on/off mode.

2. The full-wave rectification circuit of a pneumatic pump according to claim 1, wherein the first switch submodule includes a level control switch, and the level control switch includes a high-voltage switching diode; or the level control switch comprises a MOS tube.

3. The full-wave rectification circuit of a pneumatic pump according to claim 1, wherein the first switching submodule includes a P-channel MOS transistor.

4. The full-wave rectification circuit of a pneumatic pump according to claim 1, wherein the first switch submodule includes an N-channel MOS transistor.

5. The full-wave rectification circuit of the pneumatic pump according to claim 4, wherein the first switch submodule is integrated on an integrated module, an MOS drive control submodule for controlling the first switch submodule to open and close is simultaneously integrated on the integrated module, the MOS drive control submodule is connected with a grid G of an MOS tube and controls a level signal, and the MOS drive control submodule provides a PWM signal for the grid G of the MOS tube.

6. The full-wave rectification circuit of the pneumatic pump according to claim 5, wherein an overload protection sub-module/an over-temperature protection sub-module/an under-voltage protection sub-module/a short circuit detection module are further integrated on the integrated module.

7. The full-wave rectification circuit of the pneumatic pump according to claim 4, wherein the BUCK circuit comprises a diode D, an inductor L and an output capacitor C which are connected in series, a node between the inductor L and the diode D is connected with a source S of an MOS (metal oxide semiconductor) tube, a cathode of the diode D is connected with the source S, a node between an anode of the diode D and the output capacitor C is connected with a full-wave rectification module, the motor M is connected in parallel with two ends of the output capacitor C1, and a drain D of the MOS tube is electrically connected with the full-wave rectification module.

8. The full-wave rectifier circuit of the pneumatic pump according to claim 1, wherein the full-wave rectifier module comprises a full-bridge rectifier bridge stack.

9. The full-wave rectification circuit of the pneumatic pump according to claim 1, wherein the full-wave rectification module is connected in parallel with an input capacitor C2.

10. The full-wave rectification circuit board of the pneumatic pump, characterized in that the full-wave rectification circuit board of the pneumatic pump of claims 1 to 9 except the motor M are assembled on a circuit board, and the circuit board is welded on the conductive pins of the motor M.

11. The full-wave rectification circuit board of the pneumatic pump, characterized in that the full-wave rectification circuit board of the pneumatic pump of claims 1 to 9 except the motor M are integrated on a circuit board fixed on a housing of the pneumatic pump.

12. The full-wave rectification circuit board of the pneumatic pump, characterized in that the full-wave rectification circuit board of the pneumatic pump of claims 1 to 9 except the motor M are integrated on the circuit board, and the circuit board is in an external adapter.

13. An electric pneumatic pump, characterized in that it comprises a full-wave rectification circuit board of the pneumatic pump according to any one of claims 10 to 12.