CN213402842U

CN213402842U - Control device of air conditioner and air conditioner

Info

Publication number: CN213402842U
Application number: CN202022331514.9U
Authority: CN
Inventors: 徐锦清; 文先仕
Original assignee: GD Midea Air Conditioning Equipment Co Ltd; Chongqing Midea Refrigeration Equipment Co Ltd
Current assignee: GD Midea Air Conditioning Equipment Co Ltd; Chongqing Midea Refrigeration Equipment Co Ltd
Priority date: 2020-10-19
Filing date: 2020-10-19
Publication date: 2021-06-08
Anticipated expiration: 2030-10-19

Abstract

The utility model discloses a controlling means and air conditioner of air conditioner, wherein, the controlling means of air conditioner includes: the circuit board comprises a first area and a second area, wherein the first area is close to the first edge of the circuit board, and the second area is positioned on one side of the first area, which is far away from the first edge; the power conversion module and the power module are arranged in the first area; the heat dissipation assembly is used for dissipating heat of the power conversion module and the power module; the control chip and the control assembly are arranged in the second area; the power module, the control chip and the control assembly are all connected with the power conversion module, and the power module is further connected with the control chip. The utility model discloses an aspect can be more rationally to each device overall arrangement, has optimized controlling means's the design of walking the line to be favorable to improving the efficiency of production and equipment, on the other hand radiator unit can cover all power devices, has promoted controlling means's heat dispersion, but wide application in air conditioner control technical field.

Description

Control device of air conditioner and air conditioner

Technical Field

The utility model relates to an air conditioner control technology, in particular to controlling means and an air conditioner of air conditioner.

Background

The control device of the air conditioner is generally constructed by adopting a combination scheme of discrete Power devices such as a rectifier bridge, a Power Factor Correction (PFC) driving assembly, an Intelligent Power Module (IPM) single Module of a compressor, a fan IPM single Module and the like, and due to the discrete arrangement of the Power devices, the wiring design between each control assembly and the Power device on a substrate is not considered, on one hand, all the Power devices (the Power Module and a Power supply conversion Module) can not be completely covered under the heat dissipation assembly, and the heat dissipation performance of the control device is influenced; on the other hand, the area of the heat dissipation assembly is too large, which is not beneficial to the layout of other devices on the substrate, and thus the electric mounting process is multiple, the labor cost is high, and the production and assembly efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least.

Therefore, an object of the present invention is to provide a control device for an air conditioner.

Another object of the present invention is to provide an air conditioner.

According to the utility model discloses a controlling means of air conditioner of first aspect embodiment includes:

the circuit board comprises a first area and a second area, wherein the first area is arranged close to a first edge of the circuit board, and the second area is positioned on one side of the first area, which is far away from the first edge;

the power conversion module and the power module are both arranged in the first area;

the heat dissipation assembly is used for dissipating heat of the power supply conversion module and the power module;

the control chip and the control assembly are both arranged in the second area;

the power module, the control chip and the control component are all connected with the power conversion module, and the power module is further connected with the control chip.

According to the utility model discloses control device of air conditioner has following beneficial effect at least: with power conversion module, power module and radiator unit set up in the first region that is close to circuit substrate first edge, be convenient for dispel the heat to power module and power conversion module, and set up control chip and control assembly second region on circuit substrate, through carrying out the setting of first region and second subregion to components and parts in the controlling means, when realizing the control function to the air conditioner, can arrange the device among the controlling means more rationally on the one hand, controlling means's the line design of walking has been optimized, thereby be favorable to improving the efficiency of production and equipment, on the other hand radiator unit can cover all power devices, the heat dispersion of controlling means has been promoted.

According to some embodiments of the utility model, power conversion module includes totem-pole circuit, ac input end and dc output end, power module includes motor drive circuit, motor drive circuit's input with dc output end connects.

According to some embodiments of the utility model, the ac input end includes ac input live wire end and ac input zero line end, the dc output end includes positive end of direct current output and direct current output negative terminal, totem-pole circuit includes high frequency half-bridge top tube, high frequency half-bridge low tube, power frequency half-bridge top tube and power frequency half-bridge low tube, the drain electrode of high frequency half-bridge top tube with the drain electrode of power frequency half-bridge top tube all with the positive end of direct current output is connected, the source electrode of high frequency half-bridge low tube with the source electrode of power frequency half-bridge low tube all with the dc output negative terminal is connected, the source electrode of high frequency half-bridge top tube with the drain electrode of high frequency half-bridge low tube all with ac input live wire end connects, the source electrode of power frequency half-bridge top tube with the drain electrode of power frequency half-bridge.

According to some embodiments of the present invention, the control assembly comprises at least one motor interface, the motor interface being connected to the output of the motor drive circuit.

According to some embodiments of the present invention, a power input interface and a power factor correction inductor, one end of the power factor correction inductor being connected to the power input interface, the other end of the power factor correction inductor being connected to the ac input;

the motor driving circuit is connected with the direct current output end through the electrolytic capacitor;

the motor interface is connected with the direct current output end through the filter capacitor;

and the sampling resistor is connected between the direct current output end and the motor interface in series.

According to the utility model discloses a some embodiments, control assembly still includes prevents inrush current return circuit, EMI filter circuit and lightning protection return circuit, power input interface loop through the lightning protection return circuit EMI filter circuit with prevent that inrush current return circuit is connected to the power factor correction inductance.

According to some embodiments of the utility model, the control assembly still includes auxiliary circuit, communication return circuit, switching power supply return circuit and current detection return circuit, the auxiliary circuit the communication return circuit switching power supply return circuit and current detection return circuit all with the control chip electricity is connected, switching power supply return circuit still with electrolytic capacitor connects, current detection return circuit still with power conversion module connects.

According to some embodiments of the present invention, the auxiliary circuit comprises at least one of a four-way valve circuit, an electronic expansion valve circuit, an electric heating circuit, and a sensor circuit.

According to some embodiments of the utility model, the first region includes follows first subregion and the second subregion of first edge setting, power module sets up in the first subregion, power conversion module sets up in the second subregion, wherein, high frequency half-bridge top tube with high frequency half-bridge lower tube is followed first edge setting, power frequency half-bridge top tube sets up the high frequency half-bridge top tube is kept away from one side of first edge, power frequency half-bridge lower tube sets up the high frequency half-bridge lower tube is kept away from one side of first edge.

According to the utility model discloses a some embodiments, first region includes follows first subregion and the second subregion of first edge setting, power module sets up in the first subregion, power conversion module sets up in the second subregion, wherein, the power frequency half-bridge top tube with the power frequency half-bridge is managed down and is followed first edge setting, the high frequency half-bridge top tube sets up the power frequency half-bridge top tube is kept away from one side of first edge, the high frequency half-bridge low tube sets up the power frequency half-bridge low tube is kept away from one side of first edge.

According to some embodiments of the utility model, the control assembly still includes prevents inrush current return circuit, EMI filtering return circuit and lightning protection return circuit, the second is regional including third subregion and fourth subregion, control chip motor interface sampling resistance electrolytic capacitor filter capacitor auxiliary circuit the communication return circuit switching power supply return circuit and the current detection return circuit all sets up in the three subregions, power factor correction inductance prevent inrush current return circuit power input interface lightning protection return circuit and EMI filtering return circuit all sets up in the fourth subregion.

According to some embodiments of the invention, the third subregion is close to the power module setting, the fourth subregion is close to the power conversion module setting.

According to the utility model discloses a some embodiments, power conversion module the power module radiator unit control chip and control unit all sets up on one side face of circuit substrate.

According to the utility model discloses a some embodiments, the power conversion module the power module and radiator unit all sets up on one side face of circuit substrate, control chip with control unit sets up on circuit substrate's the opposite side face.

According to the utility model discloses an air conditioner of second aspect embodiment includes:

the heat dissipation device comprises a wind wheel or a refrigerant pipe;

a control device for an air conditioner as defined in the embodiment of the first aspect above, the control device for an air conditioner being disposed adjacent to the heat sink.

According to the utility model discloses an air conditioner still has following beneficial effect at least: the control device is arranged close to the wind wheel or the refrigerant pipe, and the control device is cooled through the wind wheel or the refrigerant pipe, so that the heat dissipation efficiency of the control device is improved, and the normal operation of the control device is ensured.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic layout diagram of components of a control device of an air conditioner according to an embodiment of the present invention;

fig. 2 is a schematic circuit diagram of a control device of an air conditioner according to an embodiment of the present invention;

fig. 3 is a schematic diagram of power tube layout and circuit connection of a power conversion module according to an embodiment of the present invention;

fig. 4 is a schematic diagram of power tube layout and circuit connection of a power conversion module according to another embodiment of the present invention;

fig. 5 is a schematic layout view of components on a side panel of a control device of an air conditioner according to another embodiment of the present invention;

fig. 6 is a schematic layout view of components on the other side of the panel of the control device of the air conditioner according to another embodiment of the present invention;

fig. 7 is a schematic view of an air conditioner according to an embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 7 is:

10 circuit substrate, 100 first edge, 101 first sub-area, 102 second sub-area, 103 third sub-area, 104 fourth sub-area, 110 first area, 111 power module, 112 power conversion module, 113 heat dissipation assembly, 120 second area, 121 control chip, 122 motor interface, 123 sampling resistor, 124 electrolytic capacitor, 125 filter capacitor, 126 power factor correction inductor, 127 anti-inrush current loop, 128 switching power supply loop, 129 current detection loop, 130 sensor loop, 131 electronic expansion valve loop, 132 four-way valve loop, 133 electric heating loop, 134 communication loop, 135 power input interface, 136 anti-lightning loop, 137EMI filter loop, 300 air conditioner, 301 heat dissipation device, Q1 high frequency half-bridge upper tube, Q2 high frequency half-bridge upper tube, Q3 power frequency upper tube, Q4 power frequency half-bridge lower tube, D drain, S source, G gate, AC-L AC input line terminal, the motor comprises an AC-N alternating current input zero line end, a V + direct current output positive end, a V-direct current output negative end, an M1 first motor and an M2 second motor.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

The embodiments of the present application will be further explained with reference to the drawings.

As shown in fig. 1, a control device of an air conditioner according to an embodiment of the present invention includes:

the circuit board comprises a circuit board 10, wherein the circuit board 10 comprises a first area 110 and a second area 120, the first area 110 is arranged close to a first edge 100 of the circuit board 10, and the second area 120 is positioned on one side, far away from the first edge 100, of the first area 110;

the power conversion module 112 and the at least one power module 111 are both arranged in the first area 110;

the heat dissipation assembly 113, the heat dissipation assembly 113 is used for dissipating heat of the power conversion module 112 and the power module 111;

the control chip 121 and the control component are both arranged in the second area 120;

the power module 111, the control chip 121 and the control component are all connected to the power conversion module 112, and the power module 111 is further connected to the control chip 121.

In this embodiment, the power conversion module 112, the power module 111, and the heat dissipation assembly 113 are disposed in the first area 110 near the first edge 100 of the circuit substrate 10, so as to facilitate heat dissipation of the power module 111 and the power conversion module 112, and the control chip 121 and the control assembly are disposed in the second area 120 on the circuit substrate 10, and by disposing the first area 110 and the second area 120 on the components in the control device, while implementing the control function of the air conditioner, on one hand, the devices in the control device can be more reasonably arranged, and the routing design of the control device is optimized, thereby facilitating improvement of the production and assembly efficiency, on the other hand, the heat dissipation assembly 113 can cover all the power devices, and improve the heat dissipation performance of the control device.

The Control chip 121 includes at least one logic computing device selected from a Micro-programmed Control Unit (MCU), a Central Processing Unit (CPU), a Digital Signal Processor (DSP), a single chip Microcomputer (MCU), and an embedded device.

It is understood that the heat dissipation assembly 113 covers a side surface of the power module 111 away from the circuit substrate 10 and a side surface of the power conversion module 112 away from the circuit substrate 10, so that heat can be dissipated from the power module 111 and the power conversion module 112. The heat dissipation assembly 113 may employ an aluminum heat sink.

Optionally, the heat dissipation assembly 113 includes a first heat dissipation assembly and a second heat dissipation assembly, the first heat dissipation assembly covers a side surface of the power module 111 away from the circuit substrate 10, and the second heat dissipation assembly covers a side surface of the power conversion module 112 away from the circuit substrate 10, so that heat dissipation of the power module and the power conversion module 112 can also be achieved.

As shown in fig. 2, it is understood that in the above embodiment, the power conversion module 112 includes a totem pole circuit, an ac input terminal, and a dc output terminal, and the power module 111 includes a motor driving circuit, and the input terminal of the motor driving circuit is connected to the dc output terminal.

In this embodiment, the power module 111 includes a first power module including a first motor driving circuit for driving the blower and a second power module including a second motor driving circuit for driving the compressor. This embodiment adopts totem-pole circuit to replace traditional rectifier bridge and PFC circuit, is favorable to reducing the controlling means overall arrangement of air conditioner and the complexity of walking the line, improves controlling means's EMC performance, reduces controlling means occupation space.

As shown in fig. 2, the motors to be driven include a first motor M1 and a second motor M2, and the first motor M1 and the second motor M2 are a fan and a compressor, respectively.

As shown in fig. 2, it can be understood that, in the above embodiment, the ac input end includes an ac input live wire end and an ac input neutral wire end, the dc output end includes a dc output positive end and a dc output negative end, the totem-pole circuit includes a high-frequency half-bridge upper tube Q1, a high-frequency half-bridge lower tube Q2, a power-frequency half-bridge upper tube Q3 and a power-frequency half-bridge lower tube Q4, the drain of the high-frequency half-bridge upper tube Q1 and the drain of the power-frequency half-bridge upper tube Q3 are both connected to the dc output positive end, the source of the high-frequency half-bridge lower tube Q2 and the source of the power-frequency half-bridge lower tube Q4 are both connected to the dc output negative end, the source of the high-frequency half-bridge upper tube Q5 and the drain of the high-frequency half-bridge lower tube Q2 are both connected.

In this embodiment, the ac input terminal is used for inputting ac power, the totem-pole circuit is composed of 4 power transistors of 2 half-bridges, the half-bridge connected to the external inductor (i.e., the pfc inductor 126) is a high-frequency half-bridge, and the other half-bridge is a power-frequency half-bridge. When alternating current is in positive half cycle, current flows in from an alternating current input live wire end through an external inductor, sequentially flows through a high-frequency half-bridge lower tube Q2 and a power-frequency half-bridge lower tube Q4 and flows out from an alternating current input zero line end, and therefore charging of the external inductor in the positive half cycle of the alternating current is achieved; when alternating current is in positive half cycle, current flows in from an alternating current input live wire end through an external inductor, sequentially flows through a high-frequency half-bridge upper tube Q1, an external capacitor (namely an electrolytic capacitor 124) and a power frequency half-bridge lower tube Q4, and flows out from the alternating current input live wire end, so that the charging of the external capacitor in the positive half cycle of the alternating current is realized; when the alternating current is in a negative half cycle, current flows in from the alternating current input zero line end, sequentially flows through the power frequency half-bridge upper tube Q3 and the high-frequency half-bridge upper tube Q1, and flows out from the alternating current input fire line end to the external inductor, so that the charging of the external inductor in the negative half cycle of the alternating current is realized; when the alternating current is in the negative half cycle, current flows in from the alternating current input zero line end, sequentially flows through the power frequency half-bridge upper tube Q3, the external capacitor and the high-frequency half-bridge lower tube Q2, and flows out from the alternating current input fire line end to the external inductor, so that the charging of the alternating current negative half cycle external capacitor is realized.

As shown in fig. 1, it will be appreciated that in the above described embodiment, the control assembly includes at least one motor interface 122, the motor interface 122 being connected to an output of the motor drive circuit.

In this embodiment, the motor interface 122 includes a first motor interface disposed proximate to the first power module for connecting with the motor M1 to be driven and a second motor interface disposed proximate to the second power module for connecting with the motor M2 to be driven.

As shown in fig. 1 and 2, it can be understood that, in the above-described embodiment, the control assembly further includes:

the power factor correction circuit comprises a power input interface 135 and a power factor correction inductor 126, wherein one end of the power factor correction inductor 126 is connected to the power input interface 135, and the other end of the power factor correction inductor 126 is connected to an alternating current input end;

the electrolytic capacitor 124, the motor drive circuit is connected with direct current output end through the electrolytic capacitor 124;

the filter capacitor 125, the motor interface 122 is connected with the dc output end through the filter capacitor 125;

and the sampling resistor 123 is connected between the direct current output end and the motor interface 122 in series.

In this embodiment, the pfc inductor 126 is connected between the hot line of the power input interface 135 and the ac input hot line of the power conversion module 112, the electrolytic capacitor 124 is configured to output a dc bus voltage, the dc bus voltage is configured to power the first motor driving circuit and the second motor driving circuit, and the sampling resistor 123 is configured to collect the current of the motor interface 122.

Optionally, the electrolytic capacitor 124 adopts at least two high-frequency low-internal-resistance electrolytic capacitors connected in parallel, and under the same capacitor requirement, compared with the case of adopting one electrolytic capacitor, the occupied space of the electrolytic capacitor can be reduced, and the internal resistance of the electrolytic capacitor can also be reduced, so that the stability is improved.

Optionally, the sampling resistor 123 may include a plurality of sampling resistors, and the plurality of sampling resistors includes at least a first sampling resistor for acquiring the first motor interface current and a second sampling resistor for acquiring the second motor interface current.

As shown in fig. 1, it can be understood that in the above-described embodiment, the control assembly further includes an inrush current prevention circuit 127, an EMI filter circuit 137 and an lightning protection circuit 136, and the power input interface 135 is connected to the pfc inductor 126 through the lightning protection circuit 136, the EMI filter circuit 137 and the inrush current prevention circuit 127 in sequence.

Specifically, EMI filter loop 137 includes a common mode inductor and at least two types of compliance capacitors (e.g., 2X capacitors and 4Y capacitors).

In this embodiment, the inrush current protection circuit 127 is used to prevent the control device from generating an inrush current at the moment when the power input interface 135 is powered on; EMI filter loop 137 is used to reduce common mode interference and differential mode interference; the lightning protection circuit 136 is used to prevent high voltage generated by a lightning strike from being input to the control device through the power input interface 135. The provision of the inrush current protection circuit 127, the EMI filter circuit 137 and the lightning protection circuit 136 described above improves the safety and reliability of the control device, thereby resulting in a longer service life of the control device.

As shown in fig. 1, it can be understood that in the above embodiment, the control assembly further includes an auxiliary circuit, a communication circuit 134, a switching power supply circuit 128 and a current detection circuit 129, the auxiliary circuit, the communication circuit 134, the switching power supply circuit 128 and the current detection circuit 129 are all electrically connected to the control chip 121, the switching power supply circuit 128 is further connected to the electrolytic capacitor 124, and the current detection circuit 129 is further connected to the power conversion module 112.

In this embodiment, the switching power supply circuit 128 is configured to convert the dc bus voltage into a target dc voltage, the target dc voltage is used to power the control chip 121, the communication circuit 134 and the auxiliary circuit, and the current detection circuit 129 is configured to detect a current input from the ac input terminal or a current output from the dc output terminal of the power conversion module 112.

As shown in fig. 1, it is understood that in the above-described embodiment, the auxiliary circuit includes at least one of a four-way valve circuit 132, an electronic expansion valve circuit 131, an electric heating circuit 133, and a sensor circuit 130.

In this embodiment, after passing through the power input interface 135, the lightning protection circuit 136, the EMI filter circuit 137, and the inrush current prevention circuit 127, the ac power is connected to the ac input terminal of the power conversion module 112 through the power factor correction inductor 126, and then is output from the dc output terminal of the power conversion module 112 to the external electrolytic capacitor 124, and after charging, a smooth dc bus voltage is obtained, and the dc bus voltage is input to the first motor driving circuit and the second motor driving circuit connected in parallel, and then a driving signal is output to the motor to be driven through the first motor driving circuit and the second motor driving circuit, so as to drive the fan and the compressor to operate.

In addition, the dc bus voltage needs to be converted into a target dc voltage to supply power to the control chip 121, the communication circuit 134, the four-way valve circuit 132, the electric heating circuit 133, the sensor circuit 130, the electronic expansion valve circuit 131, and the like.

The control chip 121 is specifically configured to control or drive the first power module, the second power module, the communication circuit 134, the four-way valve circuit 132, the electric heating circuit 133, the sensor circuit 130, the electronic expansion valve circuit 131, and the like to operate.

As shown in fig. 1 and 3, it can be understood that in the above-described embodiment, the first region 110 includes the first sub-region 101 and the second sub-region 102 disposed along the first edge 100, the power module 111 is disposed in the first sub-region 101, and the power conversion module 112 is disposed in the second sub-region 102, wherein the high-frequency half-bridge upper tube Q1 and the high-frequency half-bridge lower tube Q2 are disposed along the first edge 100, the power-frequency half-bridge upper tube Q3 is disposed on a side of the high-frequency half-bridge upper tube Q1 away from the first edge 100, and the power-frequency half-bridge lower tube Q4 is disposed on a side of the high-frequency half-bridge lower tube Q2 away.

In this embodiment, the high-frequency half-bridge upper tube Q1, the high-frequency half-bridge lower tube Q2, the power frequency half-bridge upper tube Q3, and the power frequency half-bridge lower tube Q4 are sequentially disposed at the upper left portion, the lower left portion, the upper right portion, and the lower right portion of the power conversion module 112, and fig. 3 shows a schematic diagram of the layout and circuit connection of these 4 power tubes. Because the ac input live wire end needs to be connected with the source electrode of the high-frequency half-bridge upper tube Q1 and the drain electrode of the high-frequency half-bridge lower tube Q2 simultaneously, the ac input neutral wire end needs to be connected with the source electrode of the power frequency half-bridge upper tube Q3 and the drain electrode of the power frequency half-bridge lower tube Q4 simultaneously, and the dc output positive end needs to be connected with the drain electrode of the high-frequency half-bridge upper tube Q1 and the drain electrode of the power frequency half-bridge upper tube Q3 simultaneously, and the dc output negative end needs to be connected with the source electrode of the high-frequency half-bridge lower tube Q2 and the source electrode of the power frequency half-bridge lower tube Q4 simultaneously, the layout mode of the embodiment is adopted, the internal wiring of the power conversion module.

As shown in fig. 1 and 4, it is understood that in another embodiment, the first region 110 includes a first sub-region 101 and a second sub-region 102 disposed along a first edge 100, the power module 111 is disposed in the first sub-region 101, and the power conversion module 112 is disposed in the second sub-region 102, wherein the power frequency half-bridge upper tube Q3 and the power frequency half-bridge lower tube Q4 are disposed along the first edge 100, the high frequency half-bridge upper tube Q1 is disposed on a side of the power frequency half-bridge Q3 away from the first edge 100, and the high frequency half-bridge lower tube Q2 is disposed on a side of the power frequency half-bridge lower tube Q4 away from the first edge 100.

In this embodiment, the high-frequency half-bridge upper tube Q1, the high-frequency half-bridge lower tube Q2, the power frequency half-bridge upper tube Q3, and the power frequency half-bridge lower tube Q4 are sequentially disposed at the upper right portion, the lower right portion, the upper left portion, and the lower left portion of the power conversion module 112, and fig. 4 shows a schematic diagram of the layout and circuit connection of these 4 power tubes. Because the ac input live wire end needs to be connected with the source electrode of the high-frequency half-bridge upper tube Q1 and the drain electrode of the high-frequency half-bridge lower tube Q2 simultaneously, the ac input neutral wire end needs to be connected with the source electrode of the power frequency half-bridge upper tube Q3 and the drain electrode of the power frequency half-bridge lower tube Q4 simultaneously, and the dc output positive end needs to be connected with the drain electrode of the high-frequency half-bridge upper tube Q1 and the drain electrode of the power frequency half-bridge upper tube Q3 simultaneously, and the dc output negative end needs to be connected with the source electrode of the high-frequency half-bridge lower tube Q2 and the source electrode of the power frequency half-bridge lower tube Q4 simultaneously, the layout mode of the embodiment is adopted, the internal wiring of the power conversion module. In addition, in this embodiment, the high-frequency half-bridge upper tube Q1 and the high-frequency half-bridge lower tube Q2 are disposed close to the second region 120, which facilitates the trace design with the power factor correction inductor 126, and further improves the EMC performance.

As shown in fig. 1, it is understood that in the above-described embodiment, the control assembly further includes an inrush current prevention circuit 127, an EMI filter circuit 137 and an anti-lightning circuit 136, the second area 120 includes the third sub-area 103 and the fourth sub-area 104, the control chip 121, the motor interface 122, the sampling resistor 123, the electrolytic capacitor 124, the filter capacitor 125, the auxiliary circuit, the communication circuit 134, the switching power supply circuit 128 and the current detection circuit 129 are all disposed in the third sub-area 103, and the power factor correction inductor 126, the inrush current prevention circuit 127, the power input interface 135, the anti-lightning circuit 136 and the EMI filter circuit 137 are all disposed in the fourth sub-area 104.

As shown in fig. 1, it is understood that in the above-described embodiment, the third sub-area 103 is disposed near the power module 111, and the fourth sub-area 104 is disposed near the power conversion module 112.

In this embodiment, the control chip 121, the motor interface 122, the sampling resistor 123, the electrolytic capacitor 124, the filter capacitor 125, the auxiliary circuit, the communication circuit 134, the switching power circuit 128, and the current detection circuit 129 are all located on the dc output side of the power conversion module 112, and need to be directly or indirectly connected to the power module 111, so as to be located in the third sub-area 103 close to the power module 111; the pfc inductor 126, the inrush current protection circuit 127, the power input interface 135, the lightning protection circuit 136, and the EMI filter circuit 137 are disposed on the ac input side of the power conversion module 112, and need to be connected to the ac input terminal of the power conversion module 112, and are disposed near the fourth sub-area 104 of the power conversion module 112.

As shown in fig. 1, it is understood that, in the above embodiment, the power conversion module 112, the power module 111, the heat dissipation assembly 113, the control chip 121, and the control assembly are disposed on one side of the board surface of the circuit substrate 10.

It can be appreciated that by further dividing the first area 110 and the second area 120 and disposing each component, the complexity of the device layout in the control device can be reduced, and the routing design of the control device can be further optimized. It should be understood that the embodiment shown in fig. 1 is only one implementation manner, and the positions of the first sub-area 101 and the second sub-area 102 may be interchanged, and the positions of the third sub-area 103 and the fourth sub-area 104 may be interchanged, so that the effect of the embodiment can be achieved only by ensuring that the associated components are arranged close to each other.

In addition, in this embodiment, since the height of some devices is high, if the height of some devices is set at two sides of the power conversion module 112 respectively, the interference between the devices and the heat dissipation assembly 113 set on the power conversion module 112 is easily generated, in order to improve the rationality of the layout of the devices, the power conversion module 112 is set close to the edge of the circuit substrate 10, and other control assemblies are all set at the same side of the power conversion module 112, so that the optimization of the layout of the device traces is realized, and the interference between the devices and the heat dissipation assembly 113 is avoided.

As shown in fig. 5 and 6, the control device of an air conditioner according to another embodiment of the present invention specifically sets the following modes: the power conversion module 112, the power module 111 and the heat dissipation assembly 113 are disposed on one side of the circuit board 10, and the control chip 121 and the control assembly are disposed on the other side of the circuit board 10.

Specifically, the circuit substrate 10 includes a first region 110 and a second region 120, the first region 110 is disposed near the first edge 100 of the circuit substrate 10, and the second region 120 is located on a side of the first region 110 away from the first edge 100. Fig. 5 shows a side plate surface of the circuit substrate 10, the power conversion module 112, the power module 111 and the heat dissipation assembly 113 are all disposed in the first region 110 near the first edge 100, and the power conversion module 112, the power module 111 and the heat dissipation assembly are all disposed on the side plate surface of the circuit substrate 10; fig. 6 shows the other side plate surface of the circuit substrate 10, the control chip 121 and the control components are disposed in the second area 120, and the control chip 121 and the control components are disposed on the side plate surface of the circuit substrate 10; the power module 111, the control chip 121, the control assembly and the power conversion module 112 are electrically connected through the circuit substrate 10, and the power module 111 is further connected with the control chip 121.

It should be understood that, in this embodiment, the circuit substrate 10 is a double-sided board, both sides of which can mount components, and the components on both sides of the board can be electrically connected through the circuit substrate 10, and the first region 110 and the second region 120 are partitions of the circuit substrate 10, and each region includes two opposite sides of the board within the respective range.

In this embodiment, since the height of some devices is high, if the devices are arranged on the same side of the circuit substrate 10, the devices are easily interfered with the heat sink, and in order to improve the layout rationality of the devices, the control component and the integrated power module 111 are respectively disposed on the two side board surfaces of the circuit substrate 10, so as to optimize the routing layout of the devices.

In addition, the power conversion module 112, the power module 111 and the heat dissipation assembly 113 are disposed on one board surface, other devices are disposed on the other board surface, components on the ac input side, such as the control chip 121, the motor interface 122, the sampling resistor 123, the electrolytic capacitor 124, the filter capacitor 125, the auxiliary circuit, the communication circuit 134, the switching power supply circuit 128 and the current detection circuit 129, are disposed in the third sub-area 103 close to the first sub-area 101, and components on the dc output side, such as the power factor correction inductor 126, the inrush current prevention circuit 127, the power input interface 135, the lightning protection circuit 136 and the EMI filter circuit 137, are disposed in the fourth sub-area 104 close to the second sub-area 102.

As shown in fig. 7, an air conditioner 300 according to an embodiment of the present invention includes a heat dissipation device 301, where the heat dissipation device 301 includes a wind wheel or a refrigerant pipe; as the control device of the air conditioner described in the above embodiment, the control device of the air conditioner is disposed near the heat sink 301.

In the embodiment, the control device is arranged close to the wind wheel or the refrigerant pipe, so that air cooling heat dissipation or refrigerant heat dissipation of the control device is realized. It should be understood that, in this embodiment, the heat dissipation assembly 113 is disposed near the edge of the circuit substrate 10, which is beneficial for the wind wheel or the refrigerant pipe to dissipate heat of the heat dissipation assembly 113, so as to further improve the heat dissipation efficiency, so as to ensure the normal operation of the control device.

As shown in fig. 7, it is understood that, in the above-described embodiment, the side of the heat dissipation assembly 113 away from the circuit substrate 10 is disposed close to the heat sink 301.

In this embodiment, by disposing the heat dissipation assembly 113 close to the heat dissipation device 301, the heat dissipation efficiency of the control device is further improved.

The air conditioner adopting the control device defined in the above embodiment has at least the following technical effects by defining the control device:

(1) the layout of components in the control device is facilitated, and the layout of the heat dissipation assembly and the power device is optimized;

(2) the Layout design of the Layout of the control device is facilitated, the EMC performance of the control device is improved, and the design complexity of the control device is reduced;

(3) the area of a radiating component of the control device for air modulation is reduced, and the occupied space of the control device is reduced.

(4) The production efficiency of the control device is improved.

While the preferred embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are included in the scope of the present invention defined by the claims.

Claims

1. A control apparatus of an air conditioner, comprising:

the control chip and the control assembly are both arranged in the second area;

2. A control apparatus of an air conditioner according to claim 1, wherein: the power supply conversion module comprises a totem-pole circuit, an alternating current input end and a direct current output end, the power module comprises a motor driving circuit, and the input end of the motor driving circuit is connected with the direct current output end.

3. A control apparatus of an air conditioner according to claim 2, wherein: the utility model discloses a power supply device, including AC input terminal and AC input zero line end, DC output end includes positive end of direct current output and direct current output negative terminal, totem-pole circuit includes high frequency half-bridge top tube, high frequency half-bridge low tube, power frequency half-bridge top tube and power frequency half-bridge low tube, the drain electrode of high frequency half-bridge top tube with the drain electrode of power frequency half-bridge top tube all with the positive end of direct current output is connected, the source electrode of high frequency half-bridge low tube with the source electrode of power frequency half-bridge low tube all with the AC input terminal is connected, the source electrode of power frequency half-bridge top tube with the drain electrode of power frequency half-bridge low tube all with the AC input zero line end is connected.

4. A control apparatus of an air conditioner according to claim 2, wherein: the control assembly comprises at least one motor interface, and the motor interface is connected with the output end of the motor driving circuit.

5. The control apparatus of an air conditioner according to claim 4, wherein the control assembly further comprises:

the power factor correction device comprises a power input interface and a power factor correction inductor, wherein one end of the power factor correction inductor is connected to the power input interface, and the other end of the power factor correction inductor is connected to the alternating current input end;

6. The control device of an air conditioner according to claim 5, wherein: the control assembly further comprises an anti-inrush current loop, an EMI filtering loop and an anti-lightning loop, and the power input interface is connected to the power factor correction inductor sequentially through the anti-lightning loop, the EMI filtering loop and the anti-inrush current loop.

7. The control device of an air conditioner according to claim 5, wherein: the control assembly further comprises an auxiliary loop, a communication loop, a switching power supply loop and a current detection loop, wherein the auxiliary loop, the communication loop, the switching power supply loop and the current detection loop are electrically connected with the control chip, the switching power supply loop is further connected with the electrolytic capacitor, and the current detection loop is further connected with the power supply conversion module.

8. The control device of an air conditioner according to claim 7, wherein: the auxiliary loop comprises at least one of a four-way valve loop, an electronic expansion valve loop, an electric heating loop and a sensor loop.

9. A control apparatus of an air conditioner according to claim 3, wherein: the first region includes along first subregion and the second subregion of first edge setting, power module sets up in the first subregion, power conversion module sets up in the second subregion, wherein, the high frequency half-bridge top tube with the high frequency half-bridge lower tube is followed first edge setting, the power frequency half-bridge top tube sets up keep away from on the high frequency half-bridge top tube one side of first edge, the power frequency half-bridge lower tube sets up the high frequency half-bridge lower tube is kept away from one side of first edge.

10. A control apparatus of an air conditioner according to claim 3, wherein: the first region includes the edge first subregion and the second subregion of first edge setting, power module sets up in the first subregion, power conversion module sets up in the second subregion, wherein, the power frequency half-bridge top tube with the power frequency half-bridge lower tube is followed first edge setting, the high frequency half-bridge top tube sets up the power frequency half-bridge top tube is kept away from one side of first edge, the high frequency half-bridge lower tube sets up the power frequency half-bridge lower tube is kept away from one side of first edge.

11. The control device of an air conditioner according to claim 7, wherein: the control assembly further comprises an inrush current prevention circuit, an EMI filter circuit and an anti-lightning strike circuit, the second area comprises a third sub-area and a fourth sub-area, the control chip, the motor interface, the sampling resistor, the electrolytic capacitor, the filter capacitor, the auxiliary circuit, the communication circuit, the switching power supply circuit and the current detection circuit are all arranged in the third sub-area, and the power factor correction inductor, the inrush current prevention circuit, the power input interface, the anti-lightning strike circuit and the EM I filter circuit are all arranged in the fourth sub-area.

12. A control apparatus of an air conditioner according to claim 11, wherein: the third sub-area is arranged close to the power module, and the fourth sub-area is arranged close to the power conversion module.

13. The control device of an air conditioner according to any one of claims 1 to 12, characterized in that: the power conversion module, the power module, the heat dissipation assembly, the control chip and the control assembly are all arranged on one side of the board surface of the circuit substrate.

14. The control device of an air conditioner according to any one of claims 1 to 12, characterized in that: the power conversion module, the power module and the radiating assembly are all arranged on one side of the board surface of the circuit substrate, and the control chip and the control assembly are arranged on the other side of the board surface of the circuit substrate.

15. An air conditioner, comprising:

the heat dissipation device comprises a wind wheel or a refrigerant pipe;

a control device of an air conditioner as claimed in any one of claims 1 to 14, which is provided near the heat radiating means.