Main control board, controller, outdoor unit and air conditioner of air conditioning system
By designing a compact main control board in the air conditioning system, laying out various circuit modules in the partition and using refrigerant heat dissipation method, the problem that existing air conditioner controllers cannot take into account both size, heat dissipation and EMI performance, achieving efficient heat dissipation and excellent EMI performance.
Patent Information
- Application Number
- CN202421527181.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-06-28
AI Technical Summary
The circuit board layout structure of existing air conditioner controllers cannot take into account the controller's size performance, heat dissipation performance and EMI performance, and the loose device layout leads to inconvenience in assembly and plug-in.
Design a main control board of an air conditioning system. By partitioning the strong electric filter circuit, active PFC circuit, electrolytic capacitor module, compressor IPM circuit, switching power supply circuit, fan IPM circuit and main control chip circuit in a compact layout, forming a minimum current loop design, and using refrigerant heat dissipation method to meet the device heat dissipation and EMI requirements at the same time.
It realizes that the device heat dissipation needs and EMI requirements are comprehensively considered under a compact layout, and takes into account the size performance, heat dissipation performance and EMI performance of the air conditioning system controller, reducing electromagnetic noise and improving anti-interference ability.
Smart Images
Figure CN222849438U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of air-conditioning circuits, in particular to a main control board, a controller, an outdoor unit and an air conditioner of an air-conditioning system. Background Art
[0002] At present, the controller of the air conditioner is large in size and the device layout is loose, which runs counter to the development direction of controller miniaturization; moreover, the layout of power devices often limits the heat dissipation of power devices and cannot adapt to higher frequency control; if the heat dissipation needs of devices with higher heat generation are given priority, it often leads to a longer current loop, which in turn leads to problems such as high electromagnetic noise and insufficient anti-interference ability. Therefore, the circuit board layout structure of the current air conditioner controller cannot take into account the various requirements of the air conditioning system controller in terms of size performance, heat dissipation performance, and EMI performance. Utility Model Content
[0003] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and to provide a main control board, a controller, an outdoor unit and an air conditioner of an air-conditioning system, which can comprehensively consider the heat dissipation requirements and EMI requirements of the components in a compact layout.
[0004] In the first aspect, the embodiment of the utility model provides a main control board of an air conditioning system, the air conditioning system includes a strong electric filter circuit, an active PFC circuit, an electrolytic capacitor module, a compressor IPM circuit, a switching power supply circuit, a fan IPM circuit and a main control chip circuit, and the main control board is divided into a first area, a second area, a third area and a fourth area from left to right:
[0005] The strong electric filter circuit is arranged in the first area;
[0006] The active PFC circuit is arranged in the second area;
[0007] The electrolytic capacitor module is arranged at the upper part of the third area, and the compressor IPM circuit is arranged at the lower part of the third area;
[0008] The switch power supply circuit is arranged at the upper part of the fourth area, and the wind turbine IPM circuit and the main control chip circuit are arranged at the lower part of the fourth area;
[0009] in:
[0010] The bridge stack devices and power devices in the strong electric filter circuit and the active PFC circuit are located in the lower part, and the inductor devices and capacitor devices in the strong electric filter circuit and the active PFC circuit are located in the upper part; the lower part of the first area, the lower part of the second area, the lower part of the third area and the lower part of the fourth area correspond to the area of the fan IPM circuit to form a refrigerant heat dissipation area, and the refrigerant heat dissipation area covers the compressor IPM circuit, the fan IPM circuit, and the bridge stack devices and power devices in the strong electric filter circuit and the active PFC circuit.
[0011] The main control board of the air-conditioning system provided by the embodiment of the utility model has at least the following beneficial effects: the AC power supply is connected from the left side of the main control board to the strong electric filter circuit of the first area, reaches the active PFC circuit of the adjacent second area, and then reaches the electrolytic capacitor module and the compressor IPM circuit of the adjacent third area. The compressor IPM circuit supplies power to the compressor and then returns to the original path, forming a minimum current loop design with strong anti-interference ability and low electromagnetic noise. In addition, the bridge stack devices and power devices in the strong electric filter circuit and the active PFC circuit are located at the bottom, so as to be adjacent to the compressor IPM circuit, so that the compressor IPM circuit and the strong electric filter circuit can be cooled by refrigerant at the same time. The devices with large heat generation in the electric filter circuit and the active PFC circuit are cooled, which has an efficient heat dissipation effect, so that the main control board can meet the heat dissipation requirements of the devices under high carrier frequency control; in addition, the switching power supply circuit is adjacent to the electrolytic capacitor module, and the path for obtaining DC power from the electrolytic capacitor module is also the shortest, and the path for the switching power supply circuit to supply power to the fan IPM circuit and the main control chip circuit in the fourth area is also the shortest; the main control chip circuit principle strong electric high frequency area can make the control of the main control chip more stable and reliable; the main control board can comprehensively consider the device heat dissipation requirements and EMI requirements in a compact layout, that is, it takes into account the size performance, heat dissipation performance and EMI performance of the controller of the air-conditioning system at the same time.
[0012] In the main control board provided by some embodiments of the present invention, the fan IPM circuit is located between the compressor IPM circuit and the main control chip circuit, and the main control chip circuit provides control signals to the fan IPM circuit and the compressor IPM circuit respectively.
[0013] In the main control board provided by some embodiments of the present invention, the upper part of the first area, the upper part of the second area, the upper part of the third area and the upper part of the fourth area constitute an air-cooling heat dissipation area.
[0014] In the main control board provided in some embodiments of the present invention, the area where the switching power supply circuit is located is adjacent to the areas where the fan IPM circuit and the main control chip circuit are located, and the switching power supply circuit supplies power to the fan IPM circuit and the main control chip circuit respectively.
[0015] In some embodiments of the utility model, the main control board provided by the air conditioning system further comprises a plurality of first load interface modules arranged in the first area.
[0016] In some embodiments of the utility model, the main control board provided, the air conditioning system further comprises a second load interface module arranged at the upper right portion of the fourth area.
[0017] In some embodiments of the utility model, the main control board provided by the air conditioning system further comprises an AC power interface module arranged at the upper left portion of the first area.
[0018] In some embodiments of the present invention, the main control board provided, the electrolytic capacitor module includes two electrolytic capacitors connected in series to the output end of the active PFC circuit, and the main control board is applied to a 3500W to 4000W controller.
[0019] Some embodiments of the present invention provide a main control board, wherein the size of the main control board in the left-right direction is less than 300 mm, and the size in the up-down direction is less than 125 mm.
[0020] In a second aspect, an embodiment of the utility model provides a controller, comprising the main control board as described in the embodiment of the first aspect above.
[0021] In a third aspect, an embodiment of the utility model provides an outdoor unit, comprising a main control board as described in the embodiment of the first aspect above or comprising a controller as described in the embodiment of the second aspect above.
[0022] In a fourth aspect, an embodiment of the utility model provides an air conditioner, comprising a main control board as described in the embodiment of the first aspect above, or comprising a controller as described in the embodiment of the second aspect above, or comprising an outdoor unit as described in the embodiment of the third aspect above.
[0023] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by practicing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures specifically pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] The accompanying drawings are used to provide a further understanding of the technical solution of the utility model and constitute a part of the specification. Together with the embodiments of the utility model, they are used to explain the technical solution of the utility model and do not constitute a limitation on the technical solution of the utility model.
[0025] The utility model is further described below in conjunction with the accompanying drawings and embodiments;
[0026] Figure 1 It is a circuit schematic diagram of the air conditioning system provided by the embodiment of the utility model;
[0027] Figure 2 It is a schematic diagram of the partitions of the main control panel of the air conditioning system provided by one embodiment of the utility model;
[0028] Figure 3 It is a schematic diagram of the partitions of the main control panel of the air conditioning system provided by another embodiment of the utility model;
[0029] Figure 4 It is a schematic diagram of the layout of each circuit module of the main control board provided by the embodiment of the utility model;
[0030] Figure 5 is corresponding to Figure 4 A schematic diagram showing the layout of each circuit module of the main control board;
[0031] Figure 6 It is a schematic diagram of the layout of the refrigerant heat dissipation area of the main control board provided by the embodiment of the utility model;
[0032] Figure 7 is corresponding to Figure 6 A schematic diagram showing the layout of the refrigerant heat dissipation area of the main control board. DETAILED DESCRIPTION
[0033] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.
[0034] In the description of the embodiments of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, "above", "below", "within", etc. are understood to include the number itself, "at least one" means one or more, "at least one of the following" and similar expressions refer to any combination of these items, including any combination of single or plural items. If there is a description of "first", "second", etc., it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.
[0035] It should be noted that the words such as setting, installing, and connecting in the embodiments of the present invention should be understood in a broad sense, and the technical personnel in the relevant technical field can reasonably determine the specific meanings of the above words in the embodiments of the present invention in combination with the specific content of the technical solution. For example, the term "connection" can be a mechanical connection, an electrical connection, or mutual communication; it can be directly connected or indirectly connected through an intermediate medium.
[0036] It should be noted that the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0037] At present, the controller of the air conditioner is large, which runs counter to the development direction of controller miniaturization. The size of the main control board restricts the reduction of the size of the air conditioner body. Moreover, the layout of power devices often limits the heat dissipation of power devices and cannot adapt to higher frequency control. If the heat dissipation needs of devices with higher heat generation need to be given priority, it often leads to a longer current loop, which in turn leads to problems such as high electromagnetic noise and insufficient anti-interference ability. Therefore, the circuit board layout structure of the current air conditioner controller cannot take into account the various requirements of the air conditioning system controller in terms of size performance, heat dissipation performance, and EMI performance. In addition, the main control board of the air conditioner often has the problem of loose device layout and inconvenient assembly and plugging during the production process.
[0038] Based on this, the embodiment of the utility model provides a main control board, a controller, an outdoor unit and an air conditioner of an air conditioning system, which can comprehensively consider the heat dissipation requirements and EMI requirements of the components in a compact layout.
[0039] The following is a further description of the embodiments of the present invention in conjunction with the accompanying drawings.
[0040] Reference Figure 1 , Figure 1It is a circuit schematic diagram of an air conditioning system provided by an embodiment of the utility model. The air conditioning system includes a strong electric filter circuit F, an active PFC circuit D, an electrolytic capacitor module H, a compressor IPM circuit E, a switching power supply circuit B, a fan IPM circuit A and a main control chip circuit C, wherein the input end of the strong electric filter circuit F is connected to a three-phase AC power supply L1, L2, and L3; the strong electric filter circuit F, the active PFC circuit D, the electrolytic capacitor module H and the compressor IPM circuit E are connected in sequence; the compressor IPM circuit E supplies power to the compressor M1; the switching power supply circuit B can obtain power from the electrolytic capacitor module H, or from one phase of the three-phase AC power supply for rectification to obtain power, the switching power supply circuit B provides low-voltage direct current to the main control chip circuit C and the fan IPM circuit A, and the main control chip circuit C provides control signals to the active PFC circuit D, the compressor IPM circuit E and the fan IPM circuit A, etc.
[0041] Reference Figure 2 , Figure 2 1 is a schematic diagram of the partitions of the main control panel of the air conditioning system provided by an embodiment of the utility model. The main control panel includes a first area, a second area, a third area and a fourth area, wherein the first area, the second area, the third area and the fourth area are arranged from left to right. It can be understood that Figure 2 The partitions shown are ideal, that is, the boundaries between the partitions are relatively straight. However, in reality, the boundaries between the partitions may be inclined or tortuous. Figure 3 shown.
[0042] Reference Figure 4 and Figure 5 , Figure 4 It is a physical layout diagram of the main control board of the air conditioning system provided by the first embodiment of the utility model, Figure 5 is corresponding to Figure 4 The schematic diagram of the layout of each circuit module of the main control board. Specifically, the main control board of the air conditioning system includes a first area, a second area, a third area and a fourth area arranged from left to right:
[0043] The strong electric filter circuit F is arranged in the first area;
[0044] The active PFC circuit D is arranged in the second area;
[0045] The electrolytic capacitor module H is arranged at the upper part of the third area, and the compressor IPM circuit E is arranged at the lower part of the third area;
[0046] The switch power supply circuit B is arranged at the upper part of the fourth area, and the fan IPM circuit A and the main control chip circuit C are arranged at the lower part of the fourth area;
[0047] in:
[0048] The bridge components and power components in the strong electric filter circuit F and the active PFC circuit D are located at the bottom, and the inductor components and capacitor components in the strong electric filter circuit F and the active PFC circuit D are located at the top;
[0049] Reference Figure 6 and Figure 7 , Figure 6 It is a schematic diagram of the layout of the refrigerant heat dissipation area of the main control board provided by the embodiment of the utility model; Figure 7 is corresponding to Figure 6 The schematic diagram of the layout of the refrigerant heat dissipation area of the main control board is shown in FIG. The lower part of the first area, the lower part of the second area, the lower part of the third area and the lower part of the fourth area correspond to the area of the fan IPM circuit A and constitute the refrigerant heat dissipation area. The refrigerant heat dissipation area covers the compressor IPM circuit E, the fan IPM circuit A, and the bridge stack devices and power devices in the strong current filter circuit F and the active PFC circuit D.
[0050] According to the main control board of the air-conditioning system provided by the embodiment of the utility model, the AC power supply is connected from the left side of the main control board to the strong electric filter circuit F of the first area, reaches the active PFC circuit D of the adjacent second area, and then reaches the electrolytic capacitor module H and the compressor IPM circuit E of the adjacent third area. The compressor IPM circuit E supplies power to the compressor and then returns along the original path, forming a minimum current loop design with strong anti-interference ability and low electromagnetic noise. In addition, the bridge stack devices and power devices in the strong electric filter circuit F and the active PFC circuit D are located at the bottom, so as to be adjacent to the compressor IPM circuit E, so that the compressor IPM circuit E and the strong electric filter circuit can be cooled by refrigerant at the same time. F and the devices with larger heat generation in the active PFC circuit D are used to dissipate heat, which has an efficient heat dissipation effect, so that the main control board can meet the heat dissipation requirements of the devices under high carrier frequency control; in addition, the switching power supply circuit B is adjacent to the electrolytic capacitor module H, and the path for obtaining DC power from the electrolytic capacitor module H is also the shortest, and the path for the switching power supply circuit B to supply power to the fan IPM circuit A and the main control chip circuit C in the fourth area is also the shortest; the main control chip circuit C operates in the high-voltage high-frequency area, which can make the control of the main control chip more stable and reliable; the main control board can comprehensively consider the heat dissipation requirements and EMI requirements of the devices in a compact layout, that is, it takes into account the size performance, heat dissipation performance and EMI performance of the controller of the air-conditioning system at the same time.
[0051] Reference Figure 1 , Figure 4 and Figure 5 In the main control board provided in some embodiments of the present invention, the fan IPM circuit A is located between the compressor IPM circuit E and the main control chip circuit C, and the main control chip circuit C provides control signals to the fan IPM circuit A and the compressor IPM circuit E respectively.
[0052] It can be understood that the fan IPM circuit A and the main control chip circuit C are both arranged in the lower part of the fourth area, so that the distance between the two is very close, and the main control chip circuit C can provide a control signal to the fan IPM circuit A through the shortest communication line; in addition, the compressor IPM circuit E is arranged in the lower part of the third area, so that the distance between the main control chip circuit C and the compressor IPM circuit E is also relatively close, and the main control chip circuit C can provide a control signal to the compressor IPM circuit E through a shorter communication line. In addition, the fan IPM circuit A is located between the compressor IPM circuit E and the main control chip circuit C, that is, the main control chip circuit C is located in the lower part of the fourth area away from the first area, the second area and the third area, which can separate the circuit of the low-voltage DC control part from other high-voltage circuits and has better EMI performance.
[0053] Reference Figure 1 , Figure 4 and Figure 5 In the main control board provided in some embodiments of the present invention, the area where the switching power supply circuit B is located is adjacent to the area where the fan IPM circuit A and the main control chip circuit C are located, and the switching power supply circuit B supplies power to the fan IPM circuit A and the main control chip circuit C respectively.
[0054] It can be understood that the area where the switching power supply circuit B is located is adjacent to the areas where the fan IPM circuit A and the main control chip circuit C are located, so that the switching power supply circuit B can supply power to the fan IPM circuit A and the main control chip circuit C respectively through the shortest power supply line.
[0055] Reference Figure 1 , Figure 4 and Figure 5 In the main control board provided in some embodiments of the present utility model, the upper part of the first area, the upper part of the second area, the upper part of the third area and the upper part of the fourth area constitute an air-cooling heat dissipation area.
[0056] It can be understood that the lower part of the first area, the lower part of the second area, the lower part of the third area and the lower part of the fourth area correspond to the area of the fan IPM circuit A, forming a refrigerant heat dissipation area, so that the refrigerant heat dissipation method is used to dissipate heat for devices with large heat generation, which has a better heat dissipation effect; and the upper part of the first area, the upper part of the second area, the upper part of the third area and the upper part of the fourth area are mainly arranged with inductance devices, capacitor devices and other devices in the circuit that do not generate too much heat and the device height is relatively high, thus forming an air-cooled heat dissipation area, and heat dissipation is carried out by air-cooling, which can achieve energy-saving and effective heat dissipation effect.
[0057] Reference Figure 1 , Figure 4 and Figure 5In the main control board provided in some embodiments of the present utility model, the air conditioning system further includes a plurality of first load interface modules G arranged in the first area.
[0058] It can be understood that the first load interface module G arranged in the first area is mainly a high-voltage load interface, for example, it can be a main load control relay plug-in port, etc.
[0059] Reference Figure 1 , Figure 4 and Figure 5 In the main control board provided in some embodiments of the present invention, the air conditioning system further includes a second load interface module G arranged at the upper right portion of the fourth area.
[0060] It can be understood that the second load interface module G in the upper right part of the fourth area is mainly a weak current load interface, for example, it can be an expansion valve plug port, a solenoid valve plug port, various sensor plug ports, etc.
[0061] Reference Figure 1 and Figure 4 In the main control board provided in some embodiments of the present invention, the air conditioning system further includes an AC power interface module arranged at the upper left portion of the first area.
[0062] It can be understood that the AC power interface module is mainly used to access the three-phase AC power sources L1, L2, and L3, and is therefore arranged in the upper left portion of the first area, with the shortest wiring between the module and the strong current filter circuit F.
[0063] It should be noted that the actual application scenario of the main control board provided by the embodiment of the utility model is mainly applied to controllers with a power range of 3500W to 4000W, and mainly adopts a dual electrolytic capacitor solution, that is, the electrolytic capacitor module H includes two electrolytic capacitors connected in series at the output end of the active PFC circuit D. Compared with the dual electrolytic capacitor solution, the single electrolytic capacitor solution has the problem of not being suitable for the temperature rise requirements of the power device and having a greater impact on the current waveform. Figures 3 to 7It can be seen that the three-phase AC power supply enters from the left layout area of the first area. From top to bottom, this part is the strong electric filter circuit F; then from left to right, it goes to the active PFC circuit D in the second area, and then to the electrolytic capacitor module H and the compressor IPM circuit E in the third area, completing the minimum current loop design; the biggest advantage of the minimum current path is that it has strong anti-interference ability and generates little electromagnetic noise; the lower part of the fourth area is the main control chip circuit C, which controls the fan drive control of the fan IPM circuit A and the compressor drive control of the compressor IPM circuit E to the left. The switching power supply circuit B is the power supply output, and downward is the fan IPM circuit A at the bottom of the fourth area and the corresponding functional load in the second load interface module G at the upper right of the fourth area. In general, the layout of this main control board is mainly designed around the refrigerant heat dissipation method, which can achieve an increase in power density; on the other hand, the layout is realized by miniaturization of the perimeter, which is combined with the application of SIC devices. The carrier frequency controlled by software is increased, so that the devices in the circuit of the active PFC circuit D in the second area can be reduced in size, and the completion can be achieved. Figure 4 The layout of this minimum loop is shown.
[0064] The main control board provided in some embodiments of the utility model optimizes the layout of components to reduce the area of the PCB board. Figure 4 The dimension in the left-right direction is less than 300 mm, and the dimension in the up-down direction is less than 125 mm, that is, the length of the main control board is less than 300 mm, and the width is less than 125 mm.
[0065] In a second aspect, an embodiment of the utility model provides a controller, comprising a main control board as described in the embodiment of the first aspect above.
[0066] According to the controller provided by the embodiment of the utility model, the AC power supply is connected from the left side of the main control board to the strong electric filter circuit F in the first area, reaches the active PFC circuit D in the adjacent second area, and then reaches the electrolytic capacitor module H and the compressor IPM circuit E in the adjacent third area. The compressor IPM circuit E supplies power to the compressor and then returns to the original path, forming a minimum current loop design with strong anti-interference ability and low electromagnetic noise. In addition, the bridge stack devices and power devices in the strong electric filter circuit F and the active PFC circuit D are located at the bottom, so as to be adjacent to the compressor IPM circuit E, so that the compressor IPM circuit E and the strong electric filter circuit F and the active PFC circuit D can be cooled by refrigerant at the same time. The components with large heat generation in the source PFC circuit D are cooled, which has an efficient heat dissipation effect, so that the main control board can meet the heat dissipation requirements of the components under high carrier frequency control; in addition, the switching power supply circuit B is adjacent to the electrolytic capacitor module H, and the path for obtaining DC power from the electrolytic capacitor module H is also the shortest. The path for the switching power supply circuit B to supply power to the fan IPM circuit A and the main control chip circuit C in the fourth area is also the shortest; the main control chip circuit C is in the strong electric high frequency area, which can make the control of the main control chip more stable and reliable; the main control board can comprehensively consider the heat dissipation requirements and EMI requirements of the components in a compact layout, that is, it takes into account the size performance, heat dissipation performance and EMI performance of the controller of the air-conditioning system at the same time.
[0067] In a third aspect, an embodiment of the utility model provides an outdoor unit, comprising a main control board as in the embodiment of the first aspect above or a controller as in the embodiment of the second aspect above.
[0068] According to the outdoor unit provided by the embodiment of the utility model, the AC power supply is connected to the strong electric filter circuit F in the first area from the left side of the main control board, reaches the active PFC circuit D in the adjacent second area, and then reaches the electrolytic capacitor module H and the compressor IPM circuit E in the adjacent third area. The compressor IPM circuit E supplies power to the compressor and then returns to the original path, forming a minimum current loop design with strong anti-interference ability and low electromagnetic noise. In addition, the bridge stack devices and power devices in the strong electric filter circuit F and the active PFC circuit D are located at the bottom, so as to be adjacent to the compressor IPM circuit E, so that the compressor IPM circuit E and the strong electric filter circuit F and the active PFC circuit D can be cooled by refrigerant at the same time. The components with large heat generation in the source PFC circuit D are cooled, which has an efficient heat dissipation effect, so that the main control board can meet the heat dissipation requirements of the components under high carrier frequency control; in addition, the switching power supply circuit B is adjacent to the electrolytic capacitor module H, and the path for obtaining DC power from the electrolytic capacitor module H is also the shortest. The path for the switching power supply circuit B to supply power to the fan IPM circuit A and the main control chip circuit C in the fourth area is also the shortest; the main control chip circuit C is in the strong electric high frequency area, which can make the control of the main control chip more stable and reliable; the main control board can comprehensively consider the heat dissipation requirements and EMI requirements of the components in a compact layout, that is, it takes into account the size performance, heat dissipation performance and EMI performance of the controller of the air-conditioning system at the same time.
[0069] In a fourth aspect, an embodiment of the utility model provides an air conditioner, comprising a main control board as described in the first aspect embodiment above, or a controller as described in the second aspect embodiment above, or an outdoor unit as described in the third aspect embodiment above.
[0070] According to the air conditioner provided by the embodiment of the utility model, the AC power supply is connected from the left side of the main control board to the strong electric filter circuit F of the first area, reaches the active PFC circuit D of the adjacent second area, and then reaches the electrolytic capacitor module H and the compressor IPM circuit E of the adjacent third area. The compressor IPM circuit E supplies power to the compressor and then returns to the original path, forming a minimum current loop design with strong anti-interference ability and low electromagnetic noise. In addition, the bridge stack devices and power devices in the strong electric filter circuit F and the active PFC circuit D are located at the bottom, so as to be adjacent to the compressor IPM circuit E, so that the compressor IPM circuit E and the strong electric filter circuit F and the active PFC circuit D can be cooled by refrigerant at the same time. The components with large heat generation in the source PFC circuit D are cooled, which has an efficient heat dissipation effect, so that the main control board can meet the heat dissipation requirements of the components under high carrier frequency control; in addition, the switching power supply circuit B is adjacent to the electrolytic capacitor module H, and the path for obtaining DC power from the electrolytic capacitor module H is also the shortest. The path for the switching power supply circuit B to supply power to the fan IPM circuit A and the main control chip circuit C in the fourth area is also the shortest; the main control chip circuit C is in the strong electric high frequency area, which can make the control of the main control chip more stable and reliable; the main control board can comprehensively consider the heat dissipation requirements and EMI requirements of the components in a compact layout, that is, it takes into account the size performance, heat dissipation performance and EMI performance of the controller of the air-conditioning system at the same time.
[0071] It will be appreciated by those skilled in the art that all or some of the steps and systems in the disclosed methods above may be implemented as software, firmware, hardware and appropriate combinations thereof. Some physical components or all physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium or a non-transitory medium and a communication medium or a temporary medium. As known to those skilled in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information such as computer-readable instructions, data structures, program modules or other data. Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disk DVD or other optical disk storage, magnetic cassettes, magnetic tapes, disk storage or other magnetic storage devices, or any other medium that may be used to store desired information and may be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.
[0072] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.
Claims
1. A main control board of an air conditioning system, characterized in that: The air conditioning system includes a strong electric filter circuit, an active PFC circuit, an electrolytic capacitor module, a compressor IPM circuit, a switching power supply circuit, a fan IPM circuit and a main control chip circuit. The main control board is divided into a first area, a second area, a third area and a fourth area from left to right: The strong electric filter circuit is arranged in the first area; The active PFC circuit is arranged in the second area; The electrolytic capacitor module is arranged at the upper part of the third area, and the compressor IPM circuit is arranged at the lower part of the third area; The switch power supply circuit is arranged at the upper part of the fourth area, and the wind turbine IPM circuit and the main control chip circuit are arranged at the lower part of the fourth area; in: The bridge stack devices and power devices in the strong electric filter circuit and the active PFC circuit are located in the lower part, and the inductor devices and capacitor devices in the strong electric filter circuit and the active PFC circuit are located in the upper part; the lower part of the first area, the lower part of the second area, the lower part of the third area and the lower part of the fourth area correspond to the area of the fan IPM circuit to form a refrigerant heat dissipation area, and the refrigerant heat dissipation area covers the compressor IPM circuit, the fan IPM circuit, and the bridge stack devices and power devices in the strong electric filter circuit and the active PFC circuit.
2. The main control board according to claim 1, characterized in that: The fan IPM circuit is located between the compressor IPM circuit and the main control chip circuit, and the main control chip circuit provides control signals to the fan IPM circuit and the compressor IPM circuit respectively.
3. The main control board according to claim 1, characterized in that: The upper portion of the first region, the upper portion of the second region, the upper portion of the third region, and the upper portion of the fourth region constitute an air-cooling heat dissipation region.
4. The main control board according to claim 1, characterized in that: The area where the switch power supply circuit is located is adjacent to the areas where the wind turbine IPM circuit and the main control chip circuit are located, and the switch power supply circuit supplies power to the wind turbine IPM circuit and the main control chip circuit respectively.
5. The main control board according to claim 1, characterized in that: The air conditioning system further includes a plurality of first load interface modules arranged in the first area.
6. The main control board according to claim 1, characterized in that: The air conditioning system further includes a second load interface module arranged at an upper right portion of the fourth area.
7. The main control board according to claim 1, characterized in that: The air conditioning system further includes an AC power interface module disposed at the upper left portion of the first area.
8. The main control board according to claim 1, characterized in that: The electrolytic capacitor module includes two electrolytic capacitors connected in series to the output end of the active PFC circuit, and the main control board is applied to a controller of 3500W to 4000W.
9. The main control board according to claim 8, characterized in that: The size of the main control board in the left-right direction is less than 300 mm, and the size in the up-down direction is less than 125 mm.
10. A controller, characterized in that: A main control board comprising any one of claims 1 to 9.
11. An outdoor unit, characterized in that: Includes the main control board according to any one of claims 1 to 9 or includes the controller according to claim 10.
12. An air conditioner, characterized in that: It comprises the main control board according to any one of claims 1 to 9, or the controller according to claim 10, or the outdoor unit according to claim 11.