Main control board, controller, outdoor unit and air conditioner of air conditioning system

Abstract

The invention discloses a main control board of an air conditioning system, a controller, an outdoor unit and an air conditioner, the air conditioning system comprises a rectification module, an active PFC module, a compressor IPM module, a fan IPM module and a heat dissipation module, the main control board is divided into a first area and a second area, and the first area and the second area are sequentially arranged in the first direction; the rectifier module, the active PFC module and the compressor IPM module are all located in the first area; the fan IPM module is arranged in the second area; the heat dissipation module covers the first area and the second area and is used for conducting heat dissipation on the rectifier module, the active PFC module, the compressor IPM module and the fan IPM module. According to the embodiment of the invention, the design of the radiator can be simplified, the cost is lower, and the overall layout of the main control board can be optimized, so that the electronic control EMI problem is optimized.

Description

Technical Field

[0001] This invention relates to the field of air conditioner technology, and more particularly to a main control board, controller, outdoor unit, and air conditioner for an air conditioning system. Background Technology

[0002] Air conditioning system main control boards typically house rectifier modules, active PFC modules, compressor IPM modules, and fan IPM modules. These functional modules are distributed across various parts of the main control board, resulting in a large board size. Furthermore, these modules themselves consume a lot of energy and generate significant heat. Therefore, multiple heat sinks are needed to ensure effective cooling for all these modules distributed across the main control board. However, installing multiple heat sinks not only increases costs but also introduces other disadvantages. For example, multiple heat sinks require more installation space, potentially affecting the overall design and layout of the main control board; the increased heat sinks lead to a rise in overall weight, impacting product portability and ease of installation; and due to the uneven distribution of functional modules, the heat sink arrangement may be inefficient, resulting in poor heat dissipation for some modules and affecting the overall system performance. Summary of the Invention

[0003] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a main control board, controller, outdoor unit and air conditioner for an air conditioning system, which can not only simplify the radiator design and reduce the cost, but also optimize the overall layout of the main control board to optimize the electrical control EMI problem.

[0004] In a first aspect, embodiments of the present invention provide a main control board for an air conditioning system. The air conditioning system includes a rectifier module, an active PFC module, a compressor IPM module, a fan IPM module, and a heat dissipation module. The main control board is divided into a first region and a second region, which are arranged sequentially along a first direction. The rectifier module, the active PFC module, and the compressor IPM module are all located in the first region. The fan IPM module is located in the second region. The heat dissipation module covers the first region and the second region and is used to dissipate heat from the rectifier module, the active PFC module, the compressor IPM module, and the fan IPM module.

[0005] In some embodiments, the air conditioning system includes a first integrated module disposed in the first region, the first integrated module including the rectifier module, the active PFC module and the compressor IPM module.

[0006] In some embodiments, the first region includes a first sub-region and a second sub-region, and the first sub-region and the second sub-region are arranged sequentially along the first direction;

[0007] The air conditioning system includes a second integrated module arranged in the first sub-region. The second integrated module includes the rectifier module and the active PFC module. The compressor IPM module is arranged in the second sub-region.

[0008] In some embodiments, the first region includes a third sub-region, a fourth sub-region, and a fifth sub-region, wherein the third sub-region, the fourth sub-region, and the fifth sub-region are arranged sequentially along the first direction;

[0009] The rectifier module is arranged in the third sub-region;

[0010] The active PFC module is arranged in the fourth sub-region;

[0011] The compressor IPM module is located in the fifth sub-region.

[0012] In some embodiments, the wind turbine IPM module includes a first wind turbine IPM submodule and a second wind turbine IPM submodule, and the second region includes a sixth subregion and a seventh subregion, wherein the sixth subregion and the seventh subregion are arranged sequentially along the first direction;

[0013] The first wind turbine IPM submodule is located in the sixth sub-region;

[0014] The second fan IPM submodule is located in the seventh sub-region.

[0015] In some embodiments, the heat dissipation module includes a heat dissipation body and a plurality of heat-conducting parts, wherein the heat dissipation body and the plurality of heat-conducting parts are connected.

[0016] Multiple heat-conducting parts are used to transfer heat from the rectifier module, the active PFC module, the compressor IPM module, and the fan IPM module to the heat dissipation body.

[0017] In some embodiments, the heat-conducting part is a heat-conducting boss extending from the heat dissipation body, and different heat-conducting bosses have different heights;

[0018] The rectifier module, the active PFC module, the compressor IPM module, and the fan IPM module each have a corresponding heat-conducting boss, and the rectifier module, the active PFC module, the compressor IPM module, and the fan IPM module are connected to their respective heat-conducting bosses through a heat-conducting material.

[0019] In some embodiments, the main control board is further provided with a positive bus and a negative bus, the compressor IPM module includes a compressor IPM circuit, the fan IPM module includes a first fan IPM sub-circuit and a second fan IPM sub-circuit, and the compressor IPM circuit, the first fan IPM sub-circuit and the second fan IPM sub-circuit are connected in parallel between the positive bus and the negative bus.

[0020] In some embodiments, the main control board is further provided with a positive bus and a negative bus. The compressor IPM module includes a compressor IPM circuit, and the fan IPM module includes a first fan IPM sub-circuit and a second fan IPM sub-circuit. The compressor IPM circuit is connected between the positive bus and the negative bus. The first fan IPM sub-circuit and the second fan IPM sub-circuit are connected in series between the positive bus and the negative bus, and the connection point of the first fan IPM sub-circuit and the second fan IPM sub-circuit is connected to the active PFC module.

[0021] In a second aspect, embodiments of the present invention provide a controller, including the main control board as described in any one of the embodiments of the first aspect.

[0022] Thirdly, embodiments of the present invention provide an outdoor unit, including a main control board as described in any one of the embodiments of the first aspect, or including a controller as described in the embodiments of the second aspect.

[0023] Fourthly, embodiments of the present invention provide an air conditioner, including a main control board as described in any one of the first aspect embodiments, or a controller as described in the second aspect embodiments, or an outdoor unit as described in the third aspect embodiments.

[0024] In some embodiments, the main control board, controller, outdoor unit, and air conditioner have at least the following beneficial effects: the rectifier module and active PFC module provide a stable and high-quality DC power supply for the system; the compressor IPM module and fan IPM module are respectively responsible for the precise control of the compressor and fan, ensuring the cooling and heating efficiency of the air conditioning system and the comfort of the indoor environment; by arranging the rectifier module, active PFC module, compressor IPM module, and fan IPM module sequentially in one direction, the overall layout of the main control board is optimized; and the heat dissipation module can completely cover the first area and the second area, enabling these functional modules to operate smoothly during operation. The system dissipates a large amount of heat generated during operation, keeping the internal temperature within a suitable range and improving the overall heat dissipation efficiency. Compared to the technical solution where these functional modules are scattered across various parts of the main control board and require multiple heat dissipation modules to solve the heat dissipation problem, the solution in this embodiment, where the rectifier module, active PFC module, compressor IPM module, and fan IPM module are arranged in a single line and share a single heat dissipation module, is more conducive to optimizing the overall layout of the main control board, making the overall structure more compact. In addition, only one heat dissipation module is needed to solve the heat generation problem, simplifying the design of the heat dissipation module, saving production costs, and helping to optimize the EMI problem of the electrical control. Attached Figure Description

[0025] The accompanying drawings are provided to further understand the technical solutions of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the technical solutions of the present invention, and do not constitute a limitation on the technical solutions of the present invention.

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0027] Figure 1 This is an optional heat dissipation layout diagram for power devices provided in an embodiment of the present invention;

[0028] Figure 2 This is another optional power device heat dissipation layout diagram provided in the embodiment of the present invention;

[0029] Figure 3 This is another optional power device heat dissipation layout diagram provided in the embodiment of the present invention;

[0030] Figure 4 This is an optional heat dissipation layout diagram for power devices provided in an embodiment of the present invention;

[0031] Figure 5 This is a schematic diagram of a circuit structure for a compressor IPM module and a fan IPM module using a common bus power supply, provided by an embodiment of the present invention.

[0032] Figure 6This is a schematic diagram of a circuit structure for a compressor IPM module and a fan IPM module using a semi-bus power supply method, provided by an embodiment of the present invention.

[0033] Figure 7 Another optional power device heat dissipation layout diagram provided in this embodiment of the invention. Detailed Implementation

[0034] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0035] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," "exceeding," etc. are understood to exclude the number itself, while "above," "below," "within," etc. are understood to include the number itself. "Any one" refers to one or more, and "at least one of the following" and similar expressions refer to any combination of these items, including any combination of single or multiple items. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0036] It should be noted that the terms "setting," "installing," and "connecting" in the embodiments of this invention should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of the above terms in the embodiments of this invention in conjunction with the specific content of the technical solution. For example, the term "connection" can be a mechanical connection, an electrical connection, or a connection that allows for mutual communication; it can be a direct connection or an indirect connection through an intermediate medium.

[0037] 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.

[0038] Air conditioning system main control boards typically house rectifier modules, active PFC modules, compressor IPM modules, and fan IPM modules. These functional modules are distributed across various parts of the main control board, resulting in a large board size. Furthermore, these modules themselves consume a lot of energy and generate significant heat. Therefore, multiple heat sinks are needed to ensure effective cooling for all these modules distributed across the main control board. However, installing multiple heat sinks not only increases costs but also introduces other disadvantages. For example, multiple heat sinks require more installation space, potentially affecting the overall design and layout of the main control board; the increased heat sinks lead to a rise in overall weight, impacting product portability and ease of installation; and due to the uneven distribution of functional modules, the heat sink arrangement may be inefficient, resulting in poor heat dissipation for some modules and affecting the overall system performance.

[0039] Based on this, embodiments of the present invention provide a main control board, controller, outdoor unit and air conditioner for an air conditioning system, which simplifies the radiator design and reduces costs, and optimizes the overall layout of the main control board to improve the electrical control EMI problem.

[0040] In a first aspect, embodiments of the present invention provide a main control board for an air conditioning system, referring to... Figure 1 The air conditioning system includes a rectifier module 100, an active PFC module 200, a compressor IPM module 300, a fan IPM module 400, and a heat dissipation module 500. The main control board is divided into a first region D and a second region E, which are arranged sequentially along a first direction. The rectifier module 100, the active PFC module 200, and the compressor IPM module 300 are all located in the first region D. The fan IPM module 400 is located in the second region E. The heat dissipation module 500 covers the first region D and the second region E and is used to dissipate heat from the rectifier module 100, the active PFC module 200, the compressor IPM module 300, and the fan IPM module 400.

[0041] It should be noted that the first direction can be along the horizontal axis of symmetry of the control board or along the vertical axis of symmetry of the control board, or other directions determined according to the specific design and functional requirements of the control board. No specific limitation is made here.

[0042] Understandably, the rectifier module 100, active PFC module 200, compressor IPM module 300, and fan IPM module 400 are arranged sequentially in one direction, making the installation and commissioning process more convenient and faster; at the same time, it also helps to improve production efficiency and reduce production costs.

[0043] It should be noted that the main control board is divided into a first area D and a second area E. The first area D and the second area E are arranged sequentially along the first direction, which can facilitate maintenance personnel to perform daily maintenance and repair work. For example, when it is necessary to replace components on the rectifier module 100, the active PFC module 200, the compressor IPM module 300, or the fan IPM module 400, the faulty component can be quickly located, thus speeding up the repair process.

[0044] In some embodiments, refer to Figure 5 , Figure 6 The rectifier module 100 includes a first bridge arm formed by a first diode D1 and a second diode D2 connected in series, a second bridge arm formed by a third diode D3 and a fourth diode D4 connected in series, and a third bridge arm formed by a fifth diode D5 and a sixth diode D6 connected in series. The first bridge arm, the second bridge arm, and the third bridge arm are connected in parallel.

[0045] In some embodiments, refer to Figure 5 The main control board is also provided with a positive bus and a negative bus. The compressor IPM module 300 includes a compressor IPM circuit. The fan IPM module 400 includes a first fan IPM sub-circuit and a second fan IPM sub-circuit. The compressor IPM circuit, the first fan IPM sub-circuit, and the second fan IPM sub-circuit are connected in parallel between the positive bus and the negative bus.

[0046] In some embodiments, refer to Figure 6 The main control board is also equipped with a positive bus and a negative bus. The compressor IPM module 300 includes a compressor IPM circuit, and the fan IPM module 400 includes a first fan IPM sub-circuit and a second fan IPM sub-circuit. The compressor IPM circuit is connected between the positive bus and the negative bus. The first fan IPM sub-circuit and the second fan IPM sub-circuit are connected in series between the positive bus and the negative bus, and the connection point of the first fan IPM sub-circuit and the second fan IPM sub-circuit is connected to the active PFC module.

[0047] It should be noted that the active PFC module 200 is connected in parallel with the rectifier module 100, and the positive bus and negative bus correspond to the positive output terminal and negative output terminal of the active PFC module 200, respectively.

[0048] In some embodiments, refer to Figure 5 , Figure 6The active PFC module 200 includes a controllable switch module 210 and a capacitor branch 220. The two ends of the capacitor branch 220 are respectively connected to the two DC output terminals of the rectifier module 100. The capacitor branch 220 includes a first capacitor C1 and a second capacitor C2 connected in series with the first capacitor C1. One end of the controllable switch module 210 is connected to the midpoint of the first bridge arm, the midpoint of the second bridge arm, and the midpoint of the third bridge arm. The other end of the controllable switch module 210 is connected to the midpoint of the capacitor branch 220. The controllable switch module 210 includes six power switches connected in reverse series, namely power switch T1, power switch T2, power switch T3, power switch T4, power switch T5, and power switch T6.

[0049] In some embodiments, refer to Figure 5 , Figure 6 The compressor IPM circuit in the compressor IPM module 300 is connected in parallel with the capacitor branch 220.

[0050] In some embodiments, refer to Figure 5 , Figure 6 The air conditioning system also includes an AC input terminal 800 and an inductor 900. The AC input terminal 800 is connected to the rectifier module 100 through the inductor 900. The AC input terminal 800 includes a first phase input terminal A, a second phase input terminal B, and a third phase input terminal C. The inductor 900 includes a first inductor L1, a second inductor L2, and a third inductor L3. The first phase input terminal A is connected to the midpoint of the first bridge arm through the first inductor L1, the second phase input terminal B is connected to the midpoint of the second bridge arm through the second inductor L2, and the third phase input terminal C is connected to the midpoint of the third bridge arm through the third inductor L3.

[0051] In some embodiments, refer to Figure 2 The air conditioning system includes a first integrated module 600 arranged in the first area D. The first integrated module 600 includes a rectifier module 100, an active PFC module 200 and a compressor IPM module 300.

[0052] Understandably, the rectifier module 100 converts AC power to DC power, while the active PFC module 200 further optimizes the waveform of the DC power, reduces harmonic content, and improves the power factor. The compressor IPM module 300 is responsible for converting the DC power into current and voltage suitable for the compressor motor. Combining these modules into the first integrated module 600 can reduce energy loss during multiple conversion processes and improve the energy efficiency of the entire system.

[0053] Understandably, the integrated design of the rectifier module 100, the active PFC module 200, and the compressor IPM module 300 reduces the number of connection lines and connection points between modules, thereby reducing the risk of failure due to poor contact or aging of the wiring.

[0054] Understandably, integrating the three functional modules—rectifier module 100, active PFC module 200, and compressor IPM module 300—can greatly simplify the overall design of the air conditioning system. There is no need to consider the location and wiring of each module separately. Furthermore, the integrated module has a smaller size and lighter weight, making it easier to install and lay out in the air conditioning system.

[0055] In some embodiments, refer to Figure 3 The first region D includes a first sub-region D1 and a second sub-region D2, which are arranged sequentially along a first direction.

[0056] The air conditioning system includes a second integrated module 700 arranged in the first sub-area D1. The second integrated module 700 includes a rectifier module 100 and an active PFC module 200. The compressor IPM module 300 is arranged in the second sub-area D2.

[0057] It should be noted that the second integrated module 700 is located in the first sub-region D1 of the first region D. It combines the rectifier module 100 and the active PFC module 200 into the second integrated module 700. These two modules are closely connected in function. The rectifier module 100 is responsible for converting AC power to DC power, while the active PFC module 200 optimizes the DC power to improve the power factor and reduce harmonic pollution. Integrating them together can reduce the number of connecting lines and connection points, reduce energy loss, and improve the overall efficiency of the system.

[0058] Understandably, the compressor IPM module 300 is located in the second sub-region D2 of the first region D, isolated from the rectifier module 100 and the active PFC module 200 which are merged into the second integrated module 700. When the compressor IPM module 300 needs to be repaired or replaced, it can be located, repaired or replaced more conveniently, which helps to reduce system downtime and improve user experience.

[0059] In some embodiments, refer to Figure 1 The first region D includes the third subregion D3, the fourth subregion D4, and the fifth subregion D5, which are arranged sequentially along the first direction.

[0060] The rectifier module 100 is located in the third sub-region D3;

[0061] The active PFC module 200 is located in the fourth sub-region D4;

[0062] The compressor IPM module 300 is located in the fifth sub-region D5.

[0063] Understandably, placing the rectifier module 100 separately in the third sub-region D3 ensures that the rectification process is not interfered with by other modules, and also facilitates heat dissipation and electromagnetic compatibility. Placing the active PFC module 200 after the rectifier module 100 ensures the stability and purity of the input power supply, providing higher quality power to the compressor IPM module 300. Placing the compressor IPM module 300 after the active PFC module 200 ensures that the compressor receives a stable and efficient power supply, thereby improving the overall performance and efficiency of the air conditioning system.

[0064] It is understandable that by arranging the rectifier module 100, the active PFC module 200, and the compressor IPM module 300 in adjacent sub-regions, energy loss and electromagnetic interference during power transmission can be reduced, which helps to optimize the energy conversion and control strategies within the system, enabling the modules to work together to achieve more efficient power utilization and conversion.

[0065] It is understandable that by separately arranging the rectifier module 100, the active PFC module 200, and the compressor IPM module 300 on three sub-regions of the first area D, when a component on the rectifier module 100, the active PFC module 200, or the compressor IPM module 300 fails and needs to be repaired or replaced, it is easier to locate, repair, or replace the corresponding component, which helps to reduce system downtime and improve user experience.

[0066] In some embodiments, refer to Figure 4 , Figure 7 The wind turbine IPM module 400 includes a first wind turbine IPM submodule 410 and a second wind turbine IPM submodule 420. The second region E includes a sixth subregion E1 and a seventh subregion E2, which are arranged sequentially along the first direction.

[0067] The first wind turbine IPM submodule 410 is located in the sixth sub-region E1;

[0068] The second fan IPM submodule 420 is located in the seventh sub-region E2.

[0069] It should be noted that the first fan IPM submodule 410 and the second fan IPM submodule 420 are responsible for the control and drive of different fans respectively. By arranging them in the sixth sub-area E1 and the seventh sub-area E2 respectively, their respective functional areas can be clearly defined, avoiding mutual interference. In addition, through the joint cooperation of the first fan IPM submodule 410 and the second fan IPM submodule 420, the air circulation and temperature regulation functions of the air conditioning system can be better maintained, ensuring that the air conditioning system can maintain efficient operation under different operating conditions.

[0070] In some embodiments, the first fan IPM sub-circuit in the first fan IPM sub-module 410 and the second fan IPM sub-circuit in the second fan IPM sub-module 420 are both connected in parallel with the capacitor branch 220 and driven by the compressor IPM module 300 via a common bus, i.e., the sixth sub-region E1 and the seventh sub-region E2 are arranged sequentially along the first direction, such as... Figure 5 As shown; or, in the first fan IPM sub-module 410, the first fan IPM sub-circuit is connected in parallel with the first capacitor C1, and in the second fan IPM sub-module 420, the second fan IPM sub-circuit is connected in parallel with the second capacitor C2, which is a half-bus voltage power supply mode, such as Figure 6 As shown.

[0071] In some embodiments, refer to Figure 4 The first region D includes a third sub-region D3, a fourth sub-region D4, and a fifth sub-region D5, which are arranged sequentially along a first direction. The rectifier module 100 is arranged in the third sub-region D3; the active PFC module 200 is arranged in the fourth sub-region D4; the compressor IPM module 300 is arranged in the fifth sub-region D5; and the fan IPM module 400 includes a first fan IPM sub-module 410 and a second fan IPM sub-module 420. The second region E includes a sixth sub-region E1 and a seventh sub-region E2, which are arranged sequentially along a first direction. The first fan IPM sub-module 410 is arranged in the sixth sub-region E1; and the second fan IPM sub-module 420 is arranged in the seventh sub-region E2.

[0072] It is understandable that by arranging the rectifier module 100, the active PFC module 200, the compressor IPM module 300, the first fan IPM submodule 410, and the second fan IPM submodule 420 in adjacent sub-regions, energy loss and electromagnetic interference during power transmission can be reduced. This helps to optimize the energy conversion and control strategies within the system, enabling the modules to work together and achieve more efficient power utilization and conversion.

[0073] It is understandable that by separately arranging the rectifier module 100, active PFC module 200, compressor IPM module 300, first fan IPM submodule 410, and second fan IPM submodule 420 on the five sub-regions of the first region D, when a component on the rectifier module 100, active PFC module 200, compressor IPM module 300, first fan IPM submodule 410, or second fan IPM submodule 420 fails and needs to be repaired or replaced, it is easier to locate, repair, or replace the corresponding component, which helps to reduce system downtime and improve user experience.

[0074] In some embodiments, refer to Figure 7 The air conditioning system includes a first integrated module 600 arranged in the first area D. The first integrated module 600 includes a rectifier module 100, an active PFC module 200, and a compressor IPM module 300. The fan IPM module 400 includes a first fan IPM submodule 410 and a second fan IPM submodule 420. The second area E includes a sixth subarea E1 and a seventh subarea E2, which are arranged sequentially along a first direction. The first fan IPM submodule 410 is arranged in the sixth subarea E1, and the second fan IPM submodule 420 is arranged in the seventh subarea E2.

[0075] Understandably, the integrated design of the rectifier module 100, the active PFC module 200, and the compressor IPM module 300 reduces the number of connection lines and connection points between modules, thereby reducing the risk of failure due to poor contact or aging wiring. The first fan IPM submodule 410 and the second fan IPM submodule 420 are responsible for the control and drive of different fans, respectively. By arranging them in the sixth sub-area E1 and the seventh sub-area E2, their respective functional areas can be clearly defined, avoiding mutual interference. In addition, through the joint cooperation of the first fan IPM submodule 410 and the second fan IPM submodule 420, the air circulation and temperature regulation functions of the air conditioning system can be better maintained, ensuring that the air conditioning system can maintain efficient operation under different operating conditions.

[0076] In some embodiments, the heat dissipation module 500 includes a heat dissipation body and a plurality of heat-conducting parts, and the heat dissipation body and the plurality of heat-conducting parts are connected.

[0077] Multiple heat-conducting parts are used to transfer heat from the rectifier module 100, the active PFC module 200, the compressor IPM module 300, and the fan IPM module 400 to the heat dissipation body.

[0078] It should be noted that the heat sink body is a flat plane with heat dissipation spikes. The flat heat sink body can only contact the tallest component. However, the components in each module are uneven, and there is a certain distance between the shorter components and the heat sink body. This will prevent the shorter components from contacting the heat sink body, and heat will easily accumulate between the shorter components and the heat sink body, affecting the heat dissipation effect.

[0079] It should be noted that the heat dissipation module 500 covers the first region D and the second region E. Specifically, the heat dissipation module 500 is located above the rectifier module 100, the active PFC module 200, the compressor IPM module 300, and the fan IPM module 400. The heat-conducting part is located in the gap area between the heat dissipation body and the functional modules such as the rectifier module 100, the active PFC module 200, the compressor IPM module 300, and the fan IPM module 400. Multiple heat-conducting parts are provided on the bottom surface of the heat dissipation body to transfer the heat from the rectifier module 100, the active PFC module 200, the compressor IPM module 300, and the fan IPM module 400 to the heat dissipation body.

[0080] Understandably, since the heat-conducting parts are located in the gap area between the heat dissipation body and the components in the functional module, they can effectively fill these gaps, reduce thermal resistance, and allow the heat dissipated from the components to be transferred to the heat dissipation body more smoothly. In addition, by flexibly arranging multiple heat-conducting parts on the heat dissipation body, it is possible to adapt to the layout of various complex functional modules in the system and ensure that each functional module can receive sufficient heat dissipation support.

[0081] In some embodiments, the heat-conducting part is a heat-conducting boss extending from the heat dissipation body, and different heat-conducting bosses have different heights.

[0082] The rectifier module 100, the active PFC module 200, the compressor IPM module 300, and the fan IPM module 400 each have a corresponding heat-conducting boss. The rectifier module 100, the active PFC module 200, the compressor IPM module 300, and the fan IPM module 400 are connected to their respective heat-conducting bosses by heat-conducting materials.

[0083] It should be noted that when the heat-conducting part is a heat-conducting protrusion extending from the heat dissipation body, the heat-conducting protrusion is integrally formed with the heat dissipation body. According to the different heights of the rectifier module 100, active PFC module 200, compressor IPM module 300 and fan IPM module 400, multiple heat-conducting protrusions of different heights are set on the bottom surface of the heat dissipation body, so that the height of the heat-conducting protrusion is adapted to the gap height between the different modules and the heat dissipation body. The heat-conducting protrusion can contact the rectifier module 100, active PFC module 200, compressor IPM module 300 and fan IPM module 400, and transfer the heat of the rectifier module 100, active PFC module 200, compressor IPM module 300 and fan IPM module 400 to the heat dissipation body to achieve rapid heat dissipation. In addition, a heat-conducting material layer is provided on the contact surface between the heat-conducting protrusion and the rectifier module 100, active PFC module 200, compressor IPM module 300 and fan IPM module 400, further enhancing the heat dissipation efficiency of each module on the main control board. In some embodiments, the thermally conductive material includes thermal paste or thermal grease.

[0084] It is understandable that thermally conductive materials such as thermal paste or thermal grease are provided on the contact surfaces between the thermally conductive bosses and the active PFC module 200, the compressor IPM module 300, and the fan IPM module 400. Adding thermally conductive bosses coated with thermally conductive materials such as thermal paste or thermal grease can better enhance the heat conduction effect and further improve the heat dissipation efficiency of each module on the main control board.

[0085] In some embodiments, the heat-conducting part is a heat-conducting pad, and different heat-conducting pads have different thicknesses; the rectifier module 100, the active PFC module 200, the compressor IPM module 300 and the fan IPM module 400 each have a corresponding heat-conducting pad, and the rectifier module 100, the active PFC module 200, the compressor IPM module 300 and the fan IPM module 400 are connected to the heat dissipation body through their respective corresponding heat-conducting pads.

[0086] It should be noted that the thermal pad is an elastic heat-absorbing material. When the flat heat sink body comes into contact with the tallest component, the thermal pad is placed in the gap between the shorter component and the heat sink body. The thermal pad will transfer the heat emitted by the shorter component to the heat sink body, thus achieving rapid heat dissipation.

[0087] It should be noted that the thermal pad can be integrally formed with the heat sink body, or the thermal pad can be separate from the heat sink body.

[0088] Understandably, setting multiple thermal pads of different thicknesses can accommodate rectifier modules 100, active PFC modules 200, compressor IPM modules 300 and fan IPM modules 400 with different heights, maximizing the opportunity for each module to indirectly contact the heat dissipation body, so that the components in each module on the main control board can be adequately cooled.

[0089] Secondly, embodiments of the present invention provide a controller, including the main control board of any one of the embodiments in the first aspect.

[0090] Thirdly, embodiments of the present invention provide an outdoor unit, including a main control board according to any one of the embodiments of the first aspect, or including a controller according to the embodiments of the second aspect.

[0091] Fourthly, embodiments of the present invention provide an air conditioner, including a main control board according to any one of the first aspect embodiments, or a controller according to the second aspect embodiments, or an outdoor unit according to the third aspect embodiments.

[0092] According to the main control board, controller, outdoor unit, and air conditioner provided in the embodiments of the present invention, the rectifier module 100 and the active PFC module 200 provide a stable and high-quality DC power supply for the system; the compressor IPM module 300 and the fan IPM module 400 are respectively responsible for the precise control of the compressor and the fan, ensuring the cooling and heating efficiency of the air conditioning system and the comfort of the indoor environment; by arranging the rectifier module 100, the active PFC module 200, the compressor IPM module 300, and the fan IPM module 400 sequentially in one direction, the overall layout of the main control board is optimized; and the heat dissipation module 500 can completely cover the first area D and the second area E, and can effectively dissipate heat generated by these functional modules during operation. The system generates a large amount of heat and dissipates it, keeping the internal temperature of the system within a suitable range, thus improving the overall heat dissipation efficiency of the system. Compared with the technical solution where these functional modules are scattered in various parts of the main control board and require multiple heat dissipation modules 500 to solve the heat dissipation problem, the solution in this embodiment, in which the rectifier module 100, active PFC module 200, compressor IPM module 300, and fan IPM module 400 are arranged in a single line and share a single heat dissipation module 500, is more conducive to optimizing the overall layout of the main control board, making the overall structure more compact. In addition, only one heat dissipation module 500 is needed to solve the heat generation problem, which simplifies the design of the heat dissipation module 500, saves production costs, and helps to optimize the EMI problem of the electrical control.

[0093] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A main control board for an air conditioning system, characterized in that, The air conditioning system includes a rectifier module, an active PFC module, a compressor IPM module, a fan IPM module, and a heat dissipation module. The main control board is divided into a first area and a second area, which are arranged sequentially along a first direction. The rectifier module, the active PFC module, and the compressor IPM module are all located in the first region; The wind turbine IPM module is located in the second area; The heat dissipation module covers the first area and the second area and is used to dissipate heat from the rectifier module, the active PFC module, the compressor IPM module and the fan IPM module.

2. The main control board according to claim 1, characterized in that, The air conditioning system includes a first integrated module arranged in the first area, the first integrated module including the rectifier module, the active PFC module and the compressor IPM module.

3. The main control board according to claim 1, characterized in that, The first region includes a first sub-region and a second sub-region, which are arranged sequentially along the first direction; The air conditioning system includes a second integrated module arranged in the first sub-region. The second integrated module includes the rectifier module and the active PFC module. The compressor IPM module is arranged in the second sub-region.

4. The main control board according to claim 1, characterized in that, The first region includes a third sub-region, a fourth sub-region, and a fifth sub-region, which are arranged sequentially along the first direction; The rectifier module is arranged in the third sub-region; The active PFC module is arranged in the fourth sub-region; The compressor IPM module is located in the fifth sub-region.

5. The main control board according to any one of claims 1 to 4, characterized in that, The wind turbine IPM module includes a first wind turbine IPM submodule and a second wind turbine IPM submodule. The second region includes a sixth subregion and a seventh subregion, which are arranged sequentially along the first direction. The first wind turbine IPM submodule is located in the sixth sub-region; The second fan IPM submodule is located in the seventh sub-region.

6. The main control board according to claim 1, characterized in that, The heat dissipation module includes a heat dissipation body and multiple heat-conducting parts, and the heat dissipation body and the multiple heat-conducting parts are connected. Multiple heat-conducting parts are used to transfer heat from the rectifier module, the active PFC module, the compressor IPM module, and the fan IPM module to the heat dissipation body.

7. The main control board according to claim 6, characterized in that, The heat-conducting part is a heat-conducting protrusion extending from the heat dissipation body, and different heat-conducting protrusions have different heights; The rectifier module, the active PFC module, the compressor IPM module, and the fan IPM module each have a corresponding heat-conducting boss, and the rectifier module, the active PFC module, the compressor IPM module, and the fan IPM module are connected to their respective heat-conducting bosses through a heat-conducting material.

8. The main control board according to claim 1, characterized in that, The main control board is also equipped with a positive bus and a negative bus. The compressor IPM module includes a compressor IPM circuit, and the fan IPM module includes a first fan IPM sub-circuit and a second fan IPM sub-circuit. The compressor IPM circuit, the first fan IPM sub-circuit, and the second fan IPM sub-circuit are connected in parallel between the positive bus and the negative bus.

9. The main control board according to claim 1, characterized in that, The main control board is also equipped with a positive bus and a negative bus. The compressor IPM module includes a compressor IPM circuit, and the fan IPM module includes a first fan IPM sub-circuit and a second fan IPM sub-circuit. The compressor IPM circuit is connected between the positive bus and the negative bus. The first fan IPM sub-circuit and the second fan IPM sub-circuit are connected in series between the positive bus and the negative bus, and the connection point of the first fan IPM sub-circuit and the second fan IPM sub-circuit is connected to the active PFC module.

10. A controller, characterized in that, Includes the main control board as described in any one of claims 1 to 9.

11. An outdoor unit, characterized in that, It includes the main control board as described in any one of claims 1 to 9, or the controller as described in claim 10.

12. An air conditioner, characterized in that, It includes the main control board as described in any one of claims 1 to 9, or the controller as described in claim 10, or the outdoor unit as described in claim 11.

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