CN215420125U

CN215420125U - Power supply device, electric control box and air conditioner

Info

Publication number: CN215420125U
Application number: CN202122090857.5U
Authority: CN
Inventors: 陈廷波; 吴田; 刘国峰; 钱雄
Original assignee: GD Midea Heating and Ventilating Equipment Co Ltd; Hefei Midea Heating and Ventilating Equipment Co Ltd
Current assignee: GD Midea Heating and Ventilating Equipment Co Ltd; Hefei Midea Heating and Ventilating Equipment Co Ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2022-01-04
Anticipated expiration: 2031-08-31

Abstract

The utility model discloses a power supply device, an electric control box and an air conditioner, relates to the technical field of circuit control, and aims to solve the technical problems that the device resource consumption of the electric control box is large and a circuit is complex in the related technology. The power supply device includes: the integrated power module and the at least one fan driving module; the integrated power module includes: the air conditioner comprises a power supply unit, a compressor driving unit, a first fan driving unit and a power supply terminal. The alternating current input power supply is connected with the power supply unit, and the power supply unit is respectively connected with the compressor driving unit, the first fan driving unit and the power supply terminal. The power supply terminal is connected with each fan driving module. The power supply unit converts alternating-current voltage provided by the alternating-current input power supply into working voltage of the compressor driving unit and/or working voltage of the first fan driving unit. The electric control box comprises a power supply device; the air conditioner comprises an electric control box. The power supply device, the electric control box and the air conditioner are used for reducing device resource consumption and circuit complexity of the electric control box.

Description

Power supply device, electric control box and air conditioner

Technical Field

The utility model relates to the technical field of circuit control, in particular to a power supply device, an electric control box and an air conditioner.

Background

Along with the improvement of living standard of people, the multi-split air conditioner is more and more widely applied. The compressor and the fan in the air conditioner play an important role in cooling or heating of the air conditioner. For the multi-split air conditioner, generally, one multi-split air conditioner may include one compressor, and a plurality of fans. The compressor of the air conditioner mainly plays a role in regulating the temperature of the output gas of the air conditioner. The air conditioner fan mainly functions to transfer cool air or hot air generated from the air conditioner into a room to change the indoor temperature.

In the related art, a driving circuit for driving a compressor to operate and a driving circuit for driving a fan to operate are disposed in an electric control box of a multi-split air conditioner. At present, when the electric control box supplies power to the driving circuits, the device resource consumption of the electric control box is large and the circuit is complex.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a power supply device, an electric control box and an air conditioner, and aims to solve the technical problems of high device resource consumption and complex circuit of the electric control box.

To achieve the above object, the present invention provides a power supply device including: the integrated power module and the at least one fan driving module; the integrated power module includes: the air conditioner comprises a power supply unit, a compressor driving unit, a first fan driving unit and a power supply terminal;

the first end of the power supply unit is connected with a first phase line of an alternating current input power supply, the second end of the power supply unit is connected with a second phase line of the alternating current input power supply, the third end of the power supply unit is connected with a third phase line of the alternating current input power supply, the fourth end of the power supply unit is respectively connected with the first end of the compressor driving unit, the first end of the first fan driving unit and the first end of the power terminal, and the fifth end of the power supply unit is respectively connected with the second end of the compressor driving unit, the second end of the first fan driving unit and the second end of the power terminal; the third end of the power supply terminal is connected with the first end of each fan driving module, and the fourth end of the power supply terminal is connected with the second end of each fan driving module;

the power supply unit is used for converting alternating-current voltage provided by the alternating-current input power supply into target direct-current voltage; the target direct current voltage is the working voltage of the compressor driving unit and/or the working voltage of the first fan driving unit.

The utility model has the beneficial effects that: by adding a new power supply terminal in the integrated power module, the target direct-current voltage output by the power supply unit can be output to each fan driving module, so that one power supply unit can be shared among a plurality of driving modules in the power supply device. Compared with the prior art that each driving module needs to be provided with an independent power supply unit, the power supply device provided by the utility model reduces the number of the power supply units, further reduces the device resource consumption of the power supply units, and reduces the circuit complexity, thereby reducing the cost of the power supply device.

On the basis of the technical scheme, the utility model can be further improved as follows.

Further, the power supply unit includes: the energy storage sub-unit is connected with the rectifier sub-unit;

the first end of the rectifier subunit is the first end of the power supply unit, the second end of the rectifier subunit is the second end of the power supply unit, the third end of the rectifier subunit is the third end of the power supply unit, the first end of the energy storage subunit is the fourth end of the power supply unit, and the second end of the energy storage subunit is the fifth end of the power supply unit;

the fourth end of the rectifier subunit is connected with the first end of the energy storage subunit, and the second end of the energy storage subunit is connected with the fifth end of the rectifier subunit;

the rectifier subunit is used for converting the alternating-current voltage provided by the alternating-current input power supply into an initial direct-current voltage and storing the initial direct-current voltage into the energy storage subunit;

and the energy storage subunit is used for outputting the target direct-current voltage.

Further, the power supply unit further includes: a first filtering subunit and/or a second filtering subunit;

the fourth end of the rectifying subunit is connected with the first end of the first filtering subunit, and the second end of the first filtering subunit is connected with the first end of the energy storage subunit;

the second filtering subunit is connected with the energy storage subunit in parallel.

Further, the first filtering subunit is an inductor, and the second filtering subunit is a capacitor.

Further, the rectifier sub-unit includes: the bridge comprises a first bridge arm, a second bridge arm and a third bridge arm; the first bridge arm comprises a first diode and a second diode which are connected in series; the second bridge arm comprises a third diode and a fourth diode which are connected in series; the third bridge arm comprises a fifth diode and a sixth diode connected in series; the first bridge arm, the second bridge arm and the third bridge arm are connected in parallel;

the middle point of the first bridge arm is a first end of the rectifier subunit, the middle point of the second bridge arm is a second end of the rectifier subunit, the middle point of the third bridge arm is a third end of the rectifier subunit, the cathode of the fifth diode is a fourth end of the rectifier subunit, and the anode of the sixth diode is a fifth end of the rectifier subunit.

Further, the energy storage subunit comprises at least one bus capacitor connected in series.

Further, the fan drive module includes: the fan driving device comprises a first voltage conversion unit and a second fan driving unit;

the first end of the first voltage conversion unit is connected with the third end of the power supply terminal, the second end of the first voltage conversion unit is connected with the fourth end of the power supply terminal, the third end of the first voltage conversion unit is connected with the first end of the second fan driving unit, and the fourth end of the first voltage conversion unit is connected with the second end of the second fan driving unit;

the first voltage conversion unit is used for converting the target direct-current voltage into the working voltage of the second fan driving unit.

Further, the integrated power module further includes: a circuit protection unit;

the third end of the power supply terminal is connected with the first end of the circuit protection unit, and the second end of the circuit protection unit is connected with the first end of each fan driving module; or a fourth end of the power supply terminal is connected with a first end of the circuit protection unit, and a second end of the circuit protection unit is connected with a second end of each fan driving module;

the circuit protection unit is used for disconnecting the power supply loop when the current of the power supply loop between the power supply terminal and the fan driving module is larger than or equal to a preset threshold value.

Further, the circuit protection unit includes a fuse.

Further, the integrated power module further includes: a main control unit, a second voltage conversion unit, and a communication unit;

the first end of the main control unit is connected with the third end of the compressor driving unit, the second end of the main control unit is connected with the third end of the first fan driving unit, the first end of the communication unit is connected with the third end of the main control unit, the first end of the second voltage conversion unit is connected with the fourth end of the power supply unit, the second end of the second voltage conversion unit is connected with the fifth end of the power supply unit, the third end of the second voltage conversion unit is respectively connected with the fourth end of the main control unit and the second end of the communication unit, and the fourth end of the second voltage conversion unit is respectively connected with the fifth end of the main control unit and the third end of the communication unit;

the second voltage conversion unit is used for converting the target direct-current voltage output by the power supply unit into the working voltage of the main control unit and the working voltage of the communication unit;

the communication unit is used for receiving the data related to the operation of the compressor driving unit and the data related to the operation of the first fan driving unit and sending the data to the main control unit;

the main control unit is used for controlling the compressor driving unit to drive the compressor to work according to the data related to the operation of the compressor driving unit; and controlling the first fan driving unit to drive the fan to work according to the data related to the operation of the first fan driving unit.

The utility model also provides an electric control box which comprises the power supply device in any technical scheme.

The beneficial effects of the present invention are the same as those of the above power supply device, and are not described herein again.

The present invention also provides an air conditioner, comprising: the electronic control box according to the technical scheme.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural view of a multi-split air conditioner in the related art;

fig. 2 is a schematic structural diagram of a first power supply device according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a first power supply unit according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a second power supply unit according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a second power supply device according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a third power supply device according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a fourth power supply device according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a fifth power supply device according to an embodiment of the present invention.

Detailed Description

Taking a central air conditioner as an example, fig. 1 is a schematic structural diagram of a multi-split air conditioner in the related art. As shown in fig. 1, for the multiple on-line air conditioner, one multiple on-line air conditioner may include an electric control box, one compressor, and at least one fan. Wherein the compressor functions to compress a driving refrigerant in the air conditioner refrigerant circuit. The rotating speed of the compressor is different, and the temperature of the output gas of the air conditioner is also different. The fan may transfer cool or hot air generated from the air conditioner into the room to change the indoor temperature.

The compressor may be a positive displacement compressor or a speed compressor. The above-mentioned positive displacement compressors can also be classified, by way of example, into piston compressors, screw compressors, scroll compressors, and rolling rotor compressors. The speed compressor may be a centrifugal compressor, an axial compressor, or the like. The compressor may also be an organic refrigerant compressor, or alternatively, an inorganic refrigerant compressor, depending on the type of refrigerant being compressed by the compressor. According to the sealing mode of the compressor, the compressor can also be an open-type refrigeration compressor, a semi-closed type refrigeration compressor, or a fully-closed type refrigeration compressor and the like.

The fan may be a centrifugal fan, a cross-flow fan, or an axial fan, etc.

It should be understood that the present invention is not limited to the number of fans of the multi-split air conditioner, and fig. 1 is a schematic diagram illustrating the multi-split air conditioner including one compressor and three fans. In addition, the multi-split air conditioner related to the utility model can be a variable frequency air conditioner or a fixed frequency air conditioner.

One compressor needs to be driven by one compressor driving circuit and one fan needs to be driven by one fan driving circuit. As described above, at least one fan may be provided in a multi-split air conditioner, and in the related art, an electric control box of the multi-split air conditioner may be provided with an integrated power module that integrates a compressor driving circuit function and a fan driving circuit function. The integrated power module can drive a fan and a compressor to operate.

The integrated power module includes: power supply unit 1, compressor drive unit and fan drive unit 1. The power supply unit 1 is configured to convert an ac voltage input from a commercial ac power grid into a dc working voltage of the compressor driving unit, and supply the dc working voltage to the compressor driving unit and the fan driving unit 1. The compressor driving unit is used for driving the compressor to operate. The fan driving unit 1 is used for driving the fan to operate. For example, the compressor driving unit may drive the compressor to operate at different rotational speeds. The compressor has different refrigerating or heating effects at different rotating speeds. The fan driving unit 1 can drive the fan to work according to different rotating speeds. The fans at different rotating speeds enable the air quantity blown out by the air conditioner to be different.

In addition, the electric control box of the multi-split air conditioner can be provided with one or more fan driving modules based on the number of fans actually connected with the multi-split air conditioner. Each fan drive module comprises a power supply unit 2 and a fan drive unit 2. The power supply unit 2 is configured to convert an ac voltage input by a commercial ac power grid into a dc working voltage of the fan driving unit, and provide the dc working voltage to the fan driving unit 2. The fan driving unit 2 is used for driving the fan to operate.

It should be understood that the integrated Power Module referred to herein may also be referred to as an integrated Power Module Board assembly, or an integrated Power Module assembly Printed Circuit Board (PCB) Board, or a compressor/fan two-in-one Module Board assembly, or a compressor/fan two-in-one Module assembly PCB Board, or a compressor/fan two-in-one Intelligent Power Module (IPM). The fan drive module may also be referred to as a fan drive module assembly, or a fan drive module board assembly PCB board, or a fan IPM. Namely, the integrated power module and the fan driving module are disposed on different PCB boards.

The PCB may be a Single-Sided board (Single-Sided Boards), a Double-Sided board (Double-Sided Boards), or a Multi-Layer board (Multi-Layer Boards). Among them, the above-mentioned various types of PCBs may be Rigid (Rigid) PCBs or Flexible (flex) PCBs.

For convenience of description, the integrated power module and the fan driving module are collectively referred to as a driving module in the following application.

Although the power supply method can supply power to the driving units of the driving modules in the electronic control box, the power supply method may cause the device resources of the electronic control box to be consumed greatly and the circuit to be complicated.

In view of the fact that the device resource consumption of the existing electronic control box is large and the circuit is complex because each driving module is provided with an independent power supply unit, the embodiment of the utility model provides the power supply device in which a plurality of driving modules share one power supply unit, so that the number of the power supply units in the power supply device is reduced, the device resource consumption of the power supply units is further reduced, and the circuit complexity is reduced, thereby reducing the cost of the power supply device.

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It should be understood that the following embodiments are provided to illustrate the application of the power supply device provided by the present invention to an air conditioner, and in particular, the application scenario of the power supply device is not limited by the present invention. For example, the power supply device can also be applied to equipment such as a refrigerator with a compressor and a fan.

It is to be understood that the described embodiments are merely a few embodiments of the utility model, and not all 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.

Example one

Fig. 2 is a schematic structural diagram of a first power supply device according to an embodiment of the present invention. As shown in fig. 2, the power supply device includes: an integrated power module, and one or more fan drive modules. The integrated power module comprises a power supply unit, a compressor driving unit, a first fan driving unit and a power supply terminal.

It should be understood that fig. 2 is an example of the power supply device including one fan driving module, and in particular, when the power supply device is implemented, the number of the fan driving modules that the power supply device may include may be determined according to the number of the fans that the air conditioner includes. For example, if the air conditioner includes 5 fans, 4 fan driving modules may be included here. Wherein, every fan drive module is used for driving 1 fan, and 1 fan can be driven by the first fan drive unit of integrated power module in addition.

As shown in fig. 2, in the power supply device provided in this embodiment, the first end of the power supply unit is connected to the first phase line L1 of the ac input power. The second end of the power supply unit is connected to the second phase line L2 of the ac input power source. The third terminal of the power supply unit is connected with the third phase line L3 of the alternating current input power supply. The fourth end of power supply unit is connected with the first end of the compressor drive unit, the first end of the first fan drive unit in this integrated power module respectively to and, the first end of power supply terminal. The fifth end of the power supply unit is respectively connected with the second end of the compressor driving unit, the second end of the first fan driving unit and the second end of the power supply terminal. The third end of the power supply terminal is connected with the first end of each fan driving module. And the fourth end of the power supply terminal is connected with the second end of each fan driving module.

The alternating current input power supply is used for providing alternating current for the power supply device. The AC input power source may be any power supply capable of supplying an Alternating Current (AC). For example, any Power source that can provide ac Power, such as a mains ac Power Supply, an alternator, an Uninterruptible Power Supply (UPS), etc. The voltage of the ac power input by the ac input power source referred to herein may be 220V, 110V, or the like, and is not limited thereto.

And the power supply unit is used for converting the alternating current voltage provided by the alternating current input power supply into a target direct current voltage. Namely, the power supply unit outputs a direct current voltage.

For example, if the fourth end of the power supply unit is a positive electrode and the fifth end is a negative electrode, the first end of the compressor driving unit and the first end of the first fan driving unit are both positive electrodes, and the second end of the compressor driving unit and the second end of the first fan driving unit are both negative electrodes. If the fourth end of the power supply unit is a negative electrode and the fifth end is a positive electrode, the first end of the compressor driving unit and the first end of the first fan driving unit are both negative electrodes, and the second end of the compressor driving unit and the second end of the first fan driving unit are both positive electrodes.

If the third end of the power supply terminal is a positive electrode and the fourth end is a negative electrode, the first end of the fan driving module is a positive electrode and the second end is a negative electrode. If the fourth end of the power supply terminal is a positive electrode and the third end is a negative electrode, the second end of the fan driving module is a positive electrode and the first end is a negative electrode.

In a possible implementation manner, the working voltage of the compressor driving unit is not equal to the working voltage of the first fan driving unit, and the target dc voltage output by the power supply may be the working voltage of the compressor driving unit or the working voltage of the first fan driving unit.

Taking the target dc voltage as the working voltage of the compressor driving unit as an example, in this implementation, the power supply unit may directly supply power to the compressor driving unit. Accordingly, in the first fan driving unit, a voltage conversion subunit for converting the target dc voltage into an operating voltage of the first fan driving unit may be further disposed. Through the voltage conversion subunit, the power supply unit can supply power to the first fan driving unit.

In another possible implementation manner, the working voltage of the compressor driving unit is equal to the working voltage of the first fan driving unit, that is, the target dc voltage may be the working voltage of the compressor driving unit and the working voltage of the first fan driving unit. In this implementation, the power supply unit may directly supply power to the compressor driving unit and the first fan driving unit.

It should be understood that the compressor driving unit mentioned above may be connected with a compressor to be driven for driving the compressor to operate. For example, the compressor driving unit may drive the compressor to rotate at the rotation speed according to a control signal received for indicating the rotation speed of the compressor.

The first fan driving unit can be connected with a fan to be driven and used for driving the fan to work. For example, the first fan driving unit may drive the fan to rotate according to the rotational speed according to a received control signal indicating the rotational speed of the fan.

In this embodiment, the integrated power module is additionally provided with a power supply terminal, which is used for outputting a target dc voltage to each fan driving module in the power supply device to supply power to each fan driving module. That is, through the power terminal, one power supply unit can be shared among a plurality of driving modules, the number of power supply units in the power supply device is reduced, and further, the device resource consumption of the power supply unit is reduced, and the circuit complexity is reduced, so that the cost of the power supply device is reduced.

Under this implementation, fan drive module need not to set up the power supply unit again additionally to can reduce the space of fan drive module in automatically controlled box, and then can reduce the size of automatically controlled box, make the overall arrangement of automatically controlled box more nimble. In addition, under the condition that the electric control box has the same space size, more fan driving modules can be arranged, so that the space utilization rate of the electric control box is improved, and the expansibility of the fan of the air conditioner is improved.

It should be understood that the present invention is not limited to the number of fan drive modules to which one power terminal may be connected. It should be understood that fig. 2 is only an example of the power supply device including one power terminal, and in a specific implementation, the power supply device may further include a plurality of power terminals, which may be specifically determined according to the number of fan driving modules that can be externally connected to one power terminal, and the number of fan driving modules included in the electronic control box.

As an example, the power terminal may be a pin terminal. The connection terminal may be, for example, one of a plug type, a barrier type, a spring type, a rail type, or a wall-through type. In specific implementation, the connection mode between the fan driving module and the power supply terminal can be determined according to the type of the power supply terminal.

And the fan driving module is used for driving a fan connected with the fan driving module. For example, the fan driving module may include a second fan driving unit for driving a fan connected to the second fan driving unit to rotate.

It should be understood that fig. 2 illustrates the modules of the power supply device according to the present invention by way of example only, and the present invention is not limited to whether the power supply device further includes other modules and whether other units are included in each driving module.

In this embodiment, by adding a new power supply terminal to the integrated power module, the target dc voltage output by the power supply unit can be output to each fan drive module, so that one power supply unit can be shared among a plurality of drive modules in the power supply device. Compared with the prior art that each driving module needs to be provided with an independent power supply unit, the power supply device provided by the utility model reduces the number of the power supply units, further reduces the device resource consumption of the power supply units, and reduces the circuit complexity, thereby reducing the cost of the power supply device.

Example two

The structure of the above power supply unit is explained below as an example. Fig. 3 is a schematic structural diagram of a first power supply unit according to an embodiment of the present invention. As shown in fig. 3, as a possible implementation manner, the power supply unit may include: a rectifier subunit and an energy storage subunit.

Wherein the first terminal of the rectifier sub-unit is the first terminal of the power supply unit. The second end of the rectifier subunit is the second end of the power supply unit. And the third end of the rectifying sub-unit is the third end of the power supply unit. The first end of the energy storage subunit is the fourth end of the power supply unit, and the second end of the energy storage subunit is the fifth end of the power supply unit.

As shown in fig. 3, in the power supply unit provided in this embodiment, the fourth terminal of the rectifying subunit is connected to the first terminal of the energy storage subunit. And the second end of the energy storage subunit is connected with the fifth end of the rectifier subunit to form an energy storage loop of the energy storage module.

And the rectifier subunit is used for converting the alternating current voltage provided by the alternating current input power supply into initial direct current voltage and storing the initial direct current voltage into the energy storage subunit. The energy storage subunit is used for storing the initial direct-current voltage output by the rectifier subunit and outputting a target direct-current voltage. In addition, the energy storage subunit can also filter (also referred to as voltage stabilization) the stored direct current to obtain a smooth and stable target direct current voltage.

The rectifier sub-unit may be, for example, a single-phase rectifier bridge, a three-phase rectifier bridge, or a multi-phase rectifier bridge, which may convert ac power into dc power.

The following description will exemplify a rectifying sub-unit by taking a three-phase rectifying bridge as an example. Fig. 4 is a schematic structural diagram of a second power supply unit according to an embodiment of the present invention. As shown in fig. 4, the rectifier sub-unit may include: a first leg, a second leg, and a third leg.

The first leg includes a first diode D1 and a second diode D2 in series. The second leg includes a third diode D3 and a fourth diode D4 in series. The third bridge arm comprises a fifth diode D5 and a sixth diode D6 in series. The first bridge arm, the second bridge arm and the third bridge arm are connected in parallel.

Illustratively, the anode of the first diode D1 is connected to the cathode of the second diode D2, the anode of the third diode D3 is connected to the cathode of the fourth diode D4, the anode of the fifth diode D5 is connected to the cathode of the sixth diode D6, the cathode of the first diode D1 is connected to the cathode of the third diode D3, the cathode of the third diode D3 is connected to the cathode of the fifth diode D5, the anode of the second diode D2 is connected to the anode of the fourth diode D4, and the anode of the fourth diode D4 is connected to the anode of the sixth diode D6.

The common end of the first diode D1 and the second diode D2 (i.e., the connection point between the anode of the first diode D1 and the cathode of the second diode D2) is the midpoint of the first arm, the common end of the third diode D3 and the fourth diode D4 (i.e., the connection point between the anode of the first diode D1 and the cathode of the second diode D2) is the midpoint of the second arm, and the common end of the fifth diode D5 and the sixth diode D6 (i.e., the connection point between the anode of the first diode D1 and the cathode of the second diode D2) is the midpoint of the third arm.

In this implementation manner, the midpoint of the first bridge arm is a first end of the rectifier subunit, the midpoint of the second bridge arm is a second end of the rectifier subunit, the midpoint of the third bridge arm is a third end of the rectifier subunit, the cathode of the fifth diode D5 is a fourth end of the rectifier subunit, and the anode of the sixth diode D6 is a fifth end of the rectifier subunit.

Although fig. 4 illustrates an example of a three-phase rectifier bridge. However, it should be understood that when the rectifying sub-unit adopts other circuit topologies to achieve rectification, the connection relationship between the rectifying sub-unit and other modules in the rectifying and filtering circuit, and the ac input power source can be adjusted according to the actual connection relationship of the circuit topologies. For example, when the rectifier sub-unit is implemented by using a unidirectional rectifier bridge, a unidirectional rectifier bridge may be provided for each phase line of the ac input power supply, or a unidirectional rectifier bridge may be provided only for some phase lines thereof, and the connection relationship may be modified according to the actual setting of the circuit, which is not described in detail herein.

Illustratively, the energy storage subunit may include at least one dc bus capacitor, and the at least one bus capacitor may be an electrolytic capacitor or the like that can perform both energy storage and filtering functions. When the energy storage subunit comprises at least two bus capacitors, i.e. a plurality of bus capacitors, the plurality of bus capacitors may be connected in series. The positive electrode of the first bus capacitor in the at least two bus capacitors is the first end of the energy storage subunit, and the negative electrode of the last bus capacitor in the at least two bus capacitors is the second end of the energy storage subunit.

In this embodiment, the rectifier subunit and the energy storage subunit in the power supply unit can provide stable direct current for the compressor driving unit, the first fan driving unit and the fan driving module in the integrated power module, so that the stability of the working voltage of each device in the compressor driving unit, the first fan driving unit and the fan driving module is improved, and the safety and the service life of the power supply device are further improved.

Continuing to refer to fig. 4, taking the example that the energy storage subunit includes the bus capacitor E1 and the bus capacitor E2, in this example, the positive pole of the bus capacitor E1 is the first end of the energy storage subunit, and the negative pole of the bus capacitor E2 is the second end of the energy storage subunit.

As a possible implementation, the power supply unit may further include: a first filtering subunit. And the fourth end of the rectifying subunit is connected with the first end of the first filtering subunit. The second end of the first filtering subunit is connected with the first end of the energy storage subunit. Namely, the first filtering subunit is connected in series on the energy storage loop of the energy storage module.

The initial dc voltage rectified by the rectifier unit usually contains a certain pulsating ac component, which is referred to as ripple voltage. Therefore, the initial dc voltage output by the rectifying sub-unit may be filtered (may also be referred to as regulated) by the first filtering sub-unit disposed at the output side of the rectifying sub-unit to reduce ripple fluctuations in the initial dc voltage output by the rectifying sub-unit.

Illustratively, the first filtering subunit may be an inductor or a Power Factor Correction (PFC) circuit, or the like. Fig. 4 is a schematic diagram illustrating the first filtering subunit as an inductor.

As another possible implementation, the power supply unit may further include: and a second filtering subunit. The second filtering subunit is connected with the energy storage subunit in parallel. Namely, the first end of the second filtering subunit is connected with the first end of the energy storage module, and the second end of the second filtering subunit is connected with the second end of the energy storage module.

Illustratively, the second filtering subunit may be used to filter EMI from outside the power supply unit, and the second filtering subunit may be any electronic component such as a thin film capacitor, which can achieve the aforementioned functions. Fig. 4 is a schematic diagram illustrating the second filtering subunit as a capacitor C1.

As another possible implementation manner, the power supply unit may include both the first filtering subunit and the second filtering subunit, as shown in fig. 4, which is not described again.

It should be understood that the above implementations are only exemplary given some implementations of the power supply unit. The present invention is not limited to whether the power supply unit further includes other sub-units or has other functions. For example, the power supply unit may further include a voltage clamping subunit for implementing surge protection, so as to protect components in the power supply unit when the power supply unit is in surge; and/or a voltage division submodule for equalizing the voltage among a plurality of bus capacitors in the energy storage submodule, and the like.

EXAMPLE III

As described above, in the power supply device provided by the present invention, the power supply terminal is newly added to the integrated power module, so that the target dc voltage output by the power supply unit can be output to each fan drive module to supply power to the fan drive module.

As a possible implementation manner, the dc working voltage required by the fan driving module is the same as the target working voltage, that is, the dc working voltage is the target working voltage. Under the implementation mode, the fan driving module does not need to be additionally provided with any unit with a voltage conversion function, and only needs to be provided with a fan driving unit capable of driving the fan to work.

For example, the fan drive module may include a second fan drive unit. The second fan driving unit is used for driving the connected fan to work.

As another possible implementation manner, the dc operating voltage required by the fan driving module is different from the target operating voltage, for example, greater than the target operating voltage, or less than the target operating voltage. In this implementation, the fan driving module may be provided with a unit having a voltage conversion function to convert the received target operating voltage.

For example, the fan driving module may include a second fan driving unit and a first voltage conversion unit. The first voltage conversion unit is used for converting the target direct-current voltage output by the power supply unit into direct-current voltage equal to the working voltage of the second fan driving unit, so that the fan driving module and other driving modules in the power supply device can share one power supply unit.

Taking the above power supply device including a fan driving module as an example, fig. 5 is a schematic structural diagram of a second power supply device according to an embodiment of the present invention. As shown in fig. 5, the fan driving module includes: the fan driving device comprises a first voltage conversion unit and a second fan driving unit.

Wherein, the first end of the first voltage conversion unit is connected with the third end of the power supply terminal. The second end of the first voltage conversion unit is connected with the fourth end of the power supply terminal. The third end of the first voltage conversion unit is connected with the first end of the second fan driving unit. And the fourth end of the first voltage conversion unit is connected with the second end of the second fan driving unit.

If the target dc voltage output by the power supply unit is less than the operating voltage of the second fan driving unit, the first voltage conversion unit may increase the target dc voltage to a dc voltage equal to the operating voltage of the second fan driving unit. If the target dc voltage output by the power supply unit is greater than the operating voltage of the second fan driving unit, the first voltage conversion unit may reduce the target dc voltage to a dc voltage equal to the operating voltage of the second fan driving unit.

By the mode, the power supply device can supply power for the fan driving module which needs any working voltage, and the expandability and the practicability of the power supply device are improved.

Example four

Fig. 6 is a schematic structural diagram of a third power supply device according to an embodiment of the present invention. As shown in fig. 6, as another possible implementation manner, the integrated power module in the power supply apparatus may further include: a circuit protection unit.

The circuit protection unit can be connected in series on a loop between the power supply terminal and the fan driving module. Illustratively, the first end of the circuit protection unit is connected with the third end of the power supply terminal, and the second end of the circuit protection unit is connected with the first end of each fan driving module. Or the first end of the circuit protection unit is connected with the fourth end of the power supply terminal, and the second end of the circuit protection unit is connected with the second end of each fan driving module.

The circuit protection unit can be used for disconnecting the power supply loop when the current in the power supply loop between the power supply terminal and the fan driving module is larger than or equal to a preset threshold value, so that the damage of devices in the fan driving module due to overlarge current is avoided, and the service life of the power supply device is prolonged.

Alternatively, the circuit protection unit may include a fuse, a current limiting diode, or a circuit breaker.

Taking the circuit protection unit including the fuse as an example, the fuse may be fused when the current in the power supply loop between the power terminal and the fan driving module is greater than or equal to a preset threshold value, so as to cut off the power supply loop. Illustratively, the fuse may be an overcurrent fuse. Specifically, the limited current of the overcurrent fuse may be determined according to the magnitude of the preset threshold.

EXAMPLE five

Fig. 7 is a schematic structural diagram of a fourth power supply device according to an embodiment of the present invention. As shown in fig. 7, as another possible implementation manner, the integrated power module in the power supply apparatus may further include: a main control unit, and a communication unit.

And the first end of the main control unit is connected with the third end of the compressor driving unit. And the second end of the main control unit is connected with the third end of the first fan driving unit. The first end of the communication unit is connected with the third end of the main control unit.

The communication unit is used for receiving the data related to the operation of the compressor driving unit and the data related to the operation of the first fan driving unit and sending the data to the main control unit.

As a possible implementation manner, taking the application of the power supply device to a multi-split air conditioner as an example, the data related to the operation of the compressor driving unit and the data related to the operation of the first fan driving unit may be data sent to the communication unit by a main control board of the multi-split air conditioner.

Illustratively, the main control panel may be an indoor main control panel of the multi-split air conditioner, or a main control panel in an outdoor unit of the multi-split air conditioner. Taking the main control board as an indoor main control board as an example, the main control board may receive operation information of a user on temperature adjustment, wind speed adjustment, switching and the like of the multi-split air conditioner, and send the operation information to the communication unit. For example, the data sent by the main control board to the communication unit may be 25 degrees celsius or first gear wind speed.

As another possible implementation manner, the data related to the operation of the compressor driving unit and the data related to the operation of the first fan driving unit may further include data collected by a collecting device of the air conditioner.

For example, the collecting device may include a temperature sensor, a humidity sensor, and the like provided on an indoor unit of an air conditioner. In this instance, the compressor driving unit operation-related data described above, and the first fan driving unit operation-related data may include indoor temperature data collected by a temperature sensor, and indoor humidity data collected by a humidity sensor.

The main control unit can control the compressor driving unit to drive the compressor to work according to the data related to the operation of the compressor driving unit, and control the first fan driving unit to drive the fan connected with the second fan driving unit according to the data related to the operation of the first fan driving unit.

The specific structures of the main control unit and the communication unit can refer to the structures of the main control unit and the communication unit of the air conditioner electric control box, and the detailed description of the utility model is omitted here.

In a possible implementation manner, if the operating voltage of the main control unit and the operating voltage of the communication unit are equal to the target dc voltage output by the power supply unit, the fourth terminal of the power supply unit may be further connected to the fourth terminal of the main control unit and the second terminal of the communication unit, respectively. The fifth end of the power supply unit can be respectively connected with the fifth end of the main control unit and the third end of the communication unit to provide working voltage for the main control unit and the communication unit.

In another possible implementation manner, if there is a unit with an operating voltage unequal to the target dc voltage in the main control unit and the communication unit, the integrated power module may further include a second voltage conversion unit. The second voltage conversion unit may convert the target direct current voltage into an operating voltage of the main control unit and an operating voltage of the communication unit.

Taking as an example that the working voltage of the main control unit and the working voltage of the communication unit are different from the target dc voltage, and the working voltage of the main control unit and the working voltage of the communication unit are the same, the first terminal of the second voltage conversion unit is connected to the fourth terminal of the power supply unit. The second end of the second voltage conversion unit is connected with the fifth end of the power supply unit. And the third end of the second voltage conversion unit is respectively connected with the fourth end of the main control unit and the second end of the communication unit. And the fourth end of the second voltage conversion unit is respectively connected with the fifth end of the main control unit and the third end of the communication unit.

If the target dc voltage output by the power supply unit is less than the operating voltage of the main control unit and the operating voltage of the communication unit, the second voltage conversion unit may be configured to increase the target dc voltage to a dc voltage equal to the operating voltage of the main control unit and the operating voltage of the communication unit. If the target dc voltage output by the power supply unit is greater than the operating voltage of the main control unit and the operating voltage of the communication unit, the second voltage conversion unit may be configured to reduce the target dc voltage to a dc voltage equal to the operating voltage of the main control unit and the operating voltage of the communication unit.

It should be understood that the operating voltage of the main control unit and the operating voltage of the communication unit may be the same or different. Fig. 7 is an example in which the operating voltage of the main control unit and the operating voltage of the communication unit are the same, and the power supply device will be described. When the working voltage of the main control unit is different from the working voltage of the communication unit, the integrated power module may further include other voltage conversion units, so that each device in the integrated power module can normally work, which is not described herein again.

It is understood that the second voltage converting unit exists because the operating voltage of the main control unit and the operating voltage of the communication unit are different from the target direct current voltage output by the power supply unit. When the working voltage of the main control unit and the working voltage of the communication unit are the same as the target direct-current voltage output by the power supply unit, the second voltage conversion unit may not be provided. That is, whether the second voltage conversion unit is present in the power supply device provided by the present invention is related to whether the operating voltage of the main control unit and the operating voltage of the communication unit are the same as the target dc voltage output by the power supply unit.

It should be understood that fig. 7 is an exemplary illustration of the power supply apparatus in which the above-described main control unit, the second voltage conversion unit, and the communication unit are all disposed in the integrated power module. In a specific implementation, the main control unit, the second voltage conversion unit, and the communication unit may not be disposed in an integrated power module, which is not limited in the present invention.

It should be understood that the above implementations are only exemplary given some implementations of the integrated power module. The present invention is not limited to whether the integrated power module further includes other units or has other functions.

EXAMPLE six

Taking the example that the power supply unit includes a rectifier subunit, a first filter subunit, and an energy storage subunit, and the rectifier subunit includes a three-phase fully-controlled bridge rectifier circuit, the first filter subunit includes an inductor, and the energy storage subunit includes a bus capacitor, fig. 8 is a schematic structural diagram of a fifth power supply device provided in the embodiment of the present invention. As shown in fig. 8, based on the power supply device according to the foregoing embodiments, the fan driving module may include: the second fan driving unit, the second main control unit and the second communication unit.

The first end of the second fan driving unit is connected with the third end of the power supply terminal 1, and the second end of the second fan driving unit is connected with the fourth end of the power supply terminal 1. The first end of the second main control unit is connected with the third end of the second fan driving unit. The second end of the second main control unit is connected with the first end of the second communication unit.

And the second communication unit is used for receiving the data related to the operation of the second fan driving unit and sending the data to the second main control unit.

For the above data related to the operation of the second fan driving unit, reference may be made to the data related to the operation of the first fan driving unit in the fourth embodiment, and details of the present invention are not repeated herein.

The second main control unit can control the first fan driving unit to drive the fan connected with the second fan driving unit according to the data related to the operation of the second fan driving unit.

The specific structures of the second main control unit and the second communication unit can refer to the structure of a fan driving module of an existing air conditioner electric control box, and the detailed description of the utility model is omitted here.

An exemplary description of how to provide operating voltages to the devices in the second main control unit and the second communication unit is as follows:

in a first possible implementation manner, if the operating voltage of the second main control unit and the operating voltage of the second communication unit are equal to the target dc voltage output by the power supply unit, the third terminal of the second main control unit and the second terminal of the second communication unit may be connected to the third terminal of the power terminal 1 in the integrated power module. The fourth terminal of the second main control unit, and the third terminal of the second communication unit may be connected with the fourth terminal of the power supply terminal 1 in the integrated power module.

In this implementation, the power supply unit may directly provide the second main control unit and the second communication unit with the operating voltage.

In a second possible implementation manner, if a unit whose operating voltage is not equal to the target dc voltage exists in the second main control unit and the second communication unit, the target dc voltage may be converted into a dc operating voltage required by the second main control unit or a dc operating voltage required by the second communication unit by the voltage conversion unit.

Taking the working voltage of the second main control unit and the working voltage of the second communication unit as equal to the dc voltage output by the second voltage conversion unit as an example, optionally, the third terminal of the second main control unit and the second terminal of the second communication unit may be connected to the third terminal of the second voltage conversion unit. The fourth terminal of the second main control unit, and the third terminal of the second communication unit may be connected with the fourth terminal of the second voltage conversion unit.

In this implementation manner, the power supply unit may provide the operating voltage for the second main control unit and the second communication unit after converting the target dc voltage into the operating voltage of the second main control unit and the operating voltage of the second communication unit by the second voltage conversion unit.

In a third possible implementation manner, still taking the example that the second voltage converting unit converts the target dc voltage into the operating voltage of the second main control unit and the operating voltage of the second communication unit as an example, the integrated power module may further include a power supply terminal 2, and a first end of the power supply terminal 2 is connected to a third end of the second voltage converting unit. A second end of the power supply terminal 2 is connected to a fourth end of the second voltage converting unit. The third terminal of the power supply terminal 2 is connected with the third terminal of the second main control unit and the second terminal of the second communication unit, respectively. The fourth end of the power supply terminal 2 is connected with the fourth end of the second main control unit and the third end of the second communication unit, respectively.

In this implementation manner, the power supply terminal 2 is arranged in the integrated power module, and is used for outputting the output voltage of the second voltage conversion unit to the second main control unit and the second communication unit in each fan driving module, so that convenience of the second voltage conversion unit for providing the working voltage for the second main control unit and the second communication unit is improved.

In a fourth possible implementation manner, on the basis of the third implementation manner, as shown in fig. 8, each fan driving module may further include a power supply terminal 3. The first end of the power supply terminal 3 is connected to the third end of the power supply terminal 2, and the second end of the power supply terminal 3 is connected to the fourth end of the power supply terminal 2. The third terminal of the power supply terminal 3 is connected with the third terminal of the second main control unit and the second terminal of the second communication unit, respectively. The fourth end of the power supply terminal 3 is connected with the fourth end of the second main control unit and the third end of the second communication unit, respectively.

In this implementation manner, by providing the power supply terminal 3 in each fan drive module, the flexibility of providing operating voltage for each device in the fan drive module can be improved when the number of fan drive modules in the power supply device is increased.

As an example, each of the devices in the integrated power module shown in fig. 8 may be disposed on the same PCB. Alternatively, the fan driving module and the integrated power module may be disposed on the same PCB.

The embodiment of the utility model also provides an electric control box. The electronic control box comprises the power supply device provided by any one of the previous embodiments. For example, the electronic control box may be an electronic control box in a central air conditioner, which has similar technical effects to the aforementioned power supply device and is not described herein again.

It should be understood that the electronic control box may further include other modules or components, such as a main control module, and the like, which is not limited thereto.

The embodiment of the utility model also provides an air conditioner which comprises the electric control box. Illustratively, the air conditioner may be a central air conditioner, such as a multi-split central air conditioner. The air conditioner has the technical effect similar to that of the power supply device, and the description is omitted.

It should be understood that the air conditioner may also include other components, such as a fan, a compressor, etc., for example, and is not limited thereto.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A power supply device, characterized in that the power supply device comprises: the integrated power module and the at least one fan driving module; the integrated power module includes: the air conditioner comprises a power supply unit, a compressor driving unit, a first fan driving unit and a power supply terminal;

2. The power supply device according to claim 1, wherein the power supply unit includes: the energy storage sub-unit is connected with the rectifier sub-unit;

3. The power supply device according to claim 2, wherein the power supply unit further comprises: a first filtering subunit and/or a second filtering subunit;

4. A power supply arrangement according to claim 3, characterized in that the first filtering subunit is an inductor and the second filtering subunit is a capacitor.

5. The power supply device according to any one of claims 2 to 4, wherein the rectifying sub-unit includes: the bridge comprises a first bridge arm, a second bridge arm and a third bridge arm; the first bridge arm comprises a first diode and a second diode which are connected in series; the second bridge arm comprises a third diode and a fourth diode which are connected in series; the third bridge arm comprises a fifth diode and a sixth diode connected in series; the first bridge arm, the second bridge arm and the third bridge arm are connected in parallel;

6. A supply device according to any one of claims 2-4, characterized in that the energy storage subunit comprises at least one bus capacitor connected in series.

7. The power supply device according to any one of claims 1 to 4, wherein the fan driving module includes: the fan driving device comprises a first voltage conversion unit and a second fan driving unit;

8. The power supply of any one of claims 1-4, wherein the integrated power module further comprises: a circuit protection unit;

9. The power supply device according to claim 8, wherein the circuit protection unit includes a fuse.

10. The power supply of any one of claims 1-4, wherein the integrated power module further comprises: a main control unit, a second voltage conversion unit, and a communication unit;

11. An electrical control box, characterized in that it comprises a power supply device according to any one of claims 1-10.

12. An air conditioner, characterized in that the air conditioner comprises: an electrical control box according to claim 11.