A driving circuit board and an air conditioning apparatus

Abstract

The application discloses a driving circuit board and air conditioning equipment, comprising a circuit board body, a load wiring terminal, a load driving module and a switching power supply; wherein the load wiring terminal is fixedly arranged at the edge position of the circuit board body, the load driving module is fixedly arranged on the circuit board body and is arranged adjacent to the load wiring terminal, the switching power supply is fixedly arranged on the circuit board body and is arranged adjacent to the load driving module, and the switching power supply, the load driving module and the load wiring terminal are sequentially distributed along a first direction; thus, the switching power supply is electrically connected with the load driving module, the load driving module is electrically connected with the load wiring terminal, and the load wiring terminal is electrically connected with the load, the wiring distance between the switching power supply, the load driving module, the load wiring terminal and the load is shortened, the transmission speed of signals from the switching power supply and the load driving module to the load wiring terminal is improved, and the signal transmission efficiency of the circuit board is improved.

Description

Technical Field

[0001] This application relates to the field of electronic component accessories technology, and more specifically, to a drive circuit board and an air conditioning device. Background Technology

[0002] In related technologies, multiple electronic components are connected on a circuit board to drive the device; however, as far as the inventors know, the existing distribution of multiple electronic components on the circuit board is relatively complicated, which makes the traces between the electronic components too long and dense, resulting in low signal transmission efficiency.

[0003] In conclusion, improving the signal transmission efficiency of circuit boards is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a driver circuit board and an air conditioning device to improve the signal transmission efficiency of the circuit board.

[0005] To achieve the above objectives, this application provides the following technical solution: A drive circuit board includes: a circuit board body, a load terminal block, a load drive module, and a switching power supply; the load terminal block is fixed at the edge of the circuit board body and is used to connect a load; the load drive module is fixed to the circuit board body and is electrically connected to the load terminal block, and is disposed adjacent to the load terminal block; the switching power supply is fixed to the circuit board body and is electrically connected to the load drive module, and is disposed adjacent to the load drive module; the switching power supply, the load drive module, and the load terminal block are distributed sequentially along a first direction, the switching power supply being closest to the center of the circuit board body, and the first direction being consistent with one edge direction of the circuit board body.

[0006] The driver circuit board provided in this application includes a circuit board body, load terminals, a load drive module, and a switching power supply. The load terminals are fixed to the edge of the circuit board body, the load drive module is fixed to the circuit board body and located adjacent to the load terminals, and the switching power supply is fixed to the circuit board body and located adjacent to the load drive module. The switching power supply, load drive module, and load terminals are sequentially distributed along a first direction. This arrangement, where the switching power supply is electrically connected to the load drive module, the load drive module is electrically connected to the load terminals, and the load terminals are electrically connected to the load, shortens the routing distance between the switching power supply, load drive module, load terminals, and load, improves the signal transmission speed from the switching power supply and load drive module to the load terminals, and enhances the signal transmission efficiency of the circuit board.

[0007] An air conditioning device includes a compressor, a fan, and a drive circuit board as described above. The compressor and fan are located in the lower region of the air conditioning device, and the drive circuit board is located above the compressor and fan. The drive circuit board is vertically positioned, with the first direction being vertical. Because the load drive module is electrically connected via a switching power supply, the load drive module is electrically connected to a load terminal, and the load terminal is electrically connected to the load, the wiring distance between the switching power supply, the load drive module, the load terminal, and the load is shortened, increasing the signal transmission speed from the switching power supply and load drive module to the load terminal, thus improving the signal transmission efficiency of the circuit board and consequently improving the signal transmission efficiency of the air conditioning device. Attached Figure Description

[0008] The accompanying drawings used in the embodiments of this application will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings. Figure 1 This is a schematic diagram of the circuit board structure provided in an embodiment of this application; Figure 2 A schematic diagram of the fan wiring terminals in the circuit board provided in the embodiments of this application; Figure 3 A rear view of the compressor drive module and the fan drive module in the circuit board provided in the embodiments of this application; Figure 4 This is a schematic diagram showing the location of the heat sink in the circuit board provided in an embodiment of this application.

[0009] Explanation of reference numerals in the attached figures: 100 - Circuit board body; 101 - Compressor terminal block; 102 - Fan terminal block; 1021 - First fan terminal block; 1022 - Second fan terminal block; 103 - Compressor drive module; 104 - Fan drive module; 105 - Energy storage capacitor; 1051 - First energy storage capacitor; 1052 - Second energy storage capacitor; 106 - Switching power supply; 107 - Relay; 108 - Main chip; 110 - First heat sink; 111 - Second heat sink; 112 - Third heat sink; 200 - Bracket, 201 - Heat sink. Detailed Implementation

[0010] To make the technical means, creative features, objectives and effects of this application easier to understand, specific embodiments are further described below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely for explaining this application and are not intended to limit this application.

[0011] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more unless otherwise expressly defined; the terms "comprising" and "having," and any variations thereof, in the specification and claims are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0012] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this application.

[0013] like Figure 1 As shown, the driving circuit board provided in this embodiment includes a circuit board body 100, and a load terminal, a load driving module, and a switching power supply 106 are all disposed on the circuit board body 100. The load terminal is fixed at the edge of the circuit board body 100 and is used to connect a load. The load driving module is fixed to the circuit board body 100 and is electrically connected to the load terminal to drive the load. The load driving module is positioned adjacent to the load terminal, shortening the wiring distance between the load driving module and the load terminal. The switching power supply 106 is fixed to the circuit board body 100 and is electrically connected to the load driving module. Furthermore, the switching power supply 106 is positioned adjacent to the load drive module, such that the switching power supply 106, the load drive module, and the load terminals are distributed sequentially along a first direction, which is consistent with the direction of one edge of the circuit board body 100. The switching power supply 106 is closest to the center of the circuit board body 100. In this way, the switching power supply 106 is electrically connected to the load drive module, the load drive module is electrically connected to the load terminals, and the load terminals are electrically connected to the load. This shortens the wiring distance between the switching power supply 106, the load drive module, and the load terminals, improves the signal transmission speed from the switching power supply 106 and the load drive module to the load terminals, and improves the signal transmission efficiency of the circuit board.

[0014] like Figure 1 As shown, the load terminals include a compressor terminal 101 and a fan terminal 102; wherein, the compressor terminal 101 is used to electrically connect to the compressor, and the fan terminal 102 is used to electrically connect to the fan, so that the circuit board provided in this embodiment can drive heat pump equipment such as air conditioners or water heaters.

[0015] The compressor terminal 101 and the fan terminal 102 are distributed sequentially along a second direction, which is consistent with the direction of another edge of the circuit board body 100. The first direction and the second direction are at an angle, so that when the compressor terminal 101 and the fan terminal 102 are distributed side by side, the mutual interference between the wiring can be reduced during the connection of the compressor terminal 101 and the fan terminal 102 to the compressor and the fan, respectively, and the signal transmission efficiency of the circuit board can be further improved.

[0016] It should be noted that the second direction and the first direction can be an acute angle, a right angle or an obtuse angle; in this embodiment of the application, in order to further shorten the trace distance between electronic components, the second direction and the first direction are set to be perpendicular to each other, so as to further improve the signal transmission efficiency of the circuit board.

[0017] like Figure 2 As shown, since there are multiple connection methods for the fan, the fan terminal 102 in the drive circuit board provided in this application embodiment includes a first fan terminal 1021 and a second fan terminal 1022; wherein, the first fan terminal 1021 has multiple terminals forming a terminal block terminal, and the second fan terminal 1022 is a screw terminal, so as to provide different wiring methods, improve the adaptability to fans with different connection methods, and improve the applicability of the circuit board.

[0018] like Figure 1 and Figure 3 As shown, the load drive module includes a compressor drive module 103 and a fan drive module 104. The compressor drive module 103 is located adjacent to the compressor terminal 101. The compressor drive module 103 is electrically connected to the compressor terminal 101 and the switching power supply 106. The compressor drive module 103 and the compressor terminal 101 are distributed sequentially along the first direction. In this way, during the connection process, the wiring can be sequentially connected from the switching power supply 106, the compressor drive module 103 to the compressor terminal 101, shortening the wiring distance and improving the signal transmission efficiency.

[0019] The fan drive module 104 is located adjacent to the fan terminal 102. The fan drive module 104 is electrically connected to the fan terminal 102 and the switching power supply 106 respectively. The fan drive module 104 is located above the fan terminal 102, and the fan drive module 104 and the fan terminal 102 are distributed sequentially along the first direction. In this way, during the connection process, the wiring can be sequentially connected from the switching power supply 106, the fan drive module 104 to the fan terminal 102, which shortens the wiring distance and improves the signal transmission efficiency.

[0020] Furthermore, the compressor drive module 103 and the fan drive module 104 are distributed sequentially along the second direction, which reduces mutual interference between the wiring during the process of connecting the compressor drive module 103 and the fan drive module 104 to the compressor terminal 101 and the fan terminal 102 respectively, thereby further improving the signal transmission efficiency of the circuit board.

[0021] In this application, the compressor drive module 103 includes a power integrated module (PIM) and a PIM drive chip. The output pin of the PIM drive chip is electrically connected to the input terminal of the PIM, and the PIM and the PIM drive chip are distributed sequentially along the second direction, which shortens the wiring distance between the PIM and the PIM drive chip.

[0022] The wind turbine drive module 104 includes an Insulated Gate Bipolar Transistor (IGBT) module and an IGBT driver chip. The output pins of the IGBT driver chip are electrically connected to the input terminals of the IGBT module. The IGBT module and the IGBT driver chip are distributed sequentially along a first direction, and the IGBT driver chip is closer to the wind turbine terminal 102 than the IGBT module, which shortens the wiring distance from the wind turbine terminal 102 to the IGBT driver chip and then to the IGBT module.

[0023] Because the compressor drive module 103 has a large transmission power, the transmission current between the compressor drive module 103 and the compressor terminal 101 is also large. To reduce the overheating of the circuit board body 100 caused by excessive transmission current, at least two first heat sinks 110 are arranged between the compressor terminal 101 and the compressor drive module 103. In one embodiment, the first heat sink 110 is a copper strip with conductive and heat dissipation functions, which can be inserted into the etched copper wire connecting the compressor terminal 101 and the compressor drive module 103 to perform current diversion and heat dissipation. In this embodiment, the first heat sink 110 includes a U-shaped body portion, with a first connecting portion and a second connecting portion at both ends. The first connecting portion and the second connecting portion are inserted into the circuit board body, and there is a gap between the U-shaped body portion and the circuit board body to improve the heat dissipation effect of the first heat sink 110. The first heat sink 110 is fixed to the circuit board body 100, and the extension direction of the central axis of the U-shaped body of the first heat sink 110 is consistent with the current routing direction formed by the etched copper wire between the compressor terminal 101 and the compressor drive module 103. By sharing the transmission current between the compressor drive module 103 and the compressor terminal 101 through the first heat sink 110, the phenomenon of overheating of the circuit board body 100 due to excessive transmission current is reduced, and the signal transmission efficiency is further improved.

[0024] like Figure 1 As shown, the circuit board body 100 provided in this application embodiment is also provided with an energy storage capacitor 105. The energy storage capacitor 105 stabilizes the voltage, filters noise, and provides instantaneous current for the transmission between the compressor drive module 103 and the switching power supply 106, as well as between the fan drive module 104 and the switching power supply 106, so as to ensure the stable transmission of signals between the load drive module and the switching power supply 106 and improve the stability of the circuit board drive process.

[0025] To shorten the wiring distance between the energy storage capacitor 105 and the compressor drive module 103 and the switching power supply 106, as well as between the fan drive module 104 and the switching power supply 106, such as Figure 1 As shown, the energy storage capacitor 105 is disposed on the circuit board body 100 along the first direction, and the energy storage capacitor 105 is far away from the compressor terminal 101 and the fan terminal 102. The energy storage capacitor 105 and the switching power supply 106 are distributed sequentially along the second direction, which improves the smoothness of the wiring between the energy storage capacitor 105 and the compressor drive module 103 and the switching power supply 106, as well as the fan drive module 104 and the switching power supply 106.

[0026] Because the load current of the compressor drive module 103 is greater than the load current of the fan drive module 104, in order to improve the voltage regulation protection of the compressor drive module 103, such as Figure 1As shown, on the projection along the first direction, the area of ​​the energy storage capacitor 105 projected onto the compressor drive module 103 is larger than the area of ​​the energy storage capacitor 105 projected onto the fan drive module 104, which further shortens the wiring distance between the energy storage capacitor 105 and the compressor drive module 103 and improves the voltage stabilization protection of the compressor drive module 103.

[0027] like Figure 1 As shown, the energy storage capacitor 105 includes a first energy storage capacitor 1051 and a second energy storage capacitor 1052. At least two second heat sinks 111 are arranged between the compressor drive module 103 and the first energy storage capacitor 1051. The second heat sinks 111 are fixed to the circuit board body 100, and the extension direction of the central axis of the U-shaped body portion of the at least two second heat sinks 111 is consistent with the current trace direction formed by the etched copper wires between the compressor drive module 103 and the first energy storage capacitor 1051. The compressor drive module 103 and the second energy storage capacitor 1052... At least two third heat sinks 112 are arranged and fixed to the circuit board body 100. The extension direction of the central axis of the U-shaped body of the at least two third heat sinks 112 is consistent with the direction of the current line between the compressor drive module 103 and the second energy storage capacitor 1052. The transmission current between the compressor drive module 103 and the energy storage capacitor 105 is shared by the second heat sinks 111 and the third heat sinks 112, which reduces the phenomenon of overheating of the circuit board body 100 due to excessive transmission current and further improves the signal transmission efficiency.

[0028] It should be noted that the structures of the second heat sink 111 and the third heat sink 112 are the same as those of the first heat sink 110. They are copper strips with conductive and heat dissipation functions, which can be inserted into the etched copper wire connecting the two components to play the role of current diversion and heat dissipation. The second heat sink 111 and the third heat sink 112 include a U-shaped body part. The two ends of the U-shaped body part have a first connecting part and a second connecting part. The first connecting part and the second connecting part are inserted into the circuit board body, and there is a gap between the U-shaped body part and the circuit board body 100 to improve the heat dissipation effect of the second heat sink 111 and the third heat sink 112.

[0029] like Figure 1 As shown, a relay 107 is electrically connected between the energy storage capacitor 105 and the compressor drive module 103. The relay 107 is fixed to the circuit board body 100, and the energy storage capacitor 105, the relay 107 and the compressor drive module 103 are distributed sequentially along the first direction. The relay 107 electrically connects the energy storage capacitor 105 and the compressor drive module 103, providing safety protection for the compressor drive module 103.

[0030] like Figure 1As shown, the circuit board body 100 provided in this application embodiment is provided with a main chip 108. The main chip 108 is located in the area surrounded by the compressor drive module 103, the fan drive module 104, the energy storage capacitor 105 and the switching power supply 106. The compressor drive module 103, the fan drive module 104 and the switching power supply 106 are all electrically connected to the main chip 108. In this way, the wiring distance between the main chip 108 and each electronic component is shortened, and the signal transmission efficiency is improved.

[0031] like Figure 4 As shown, the drive circuit board provided in this embodiment of the application also includes a bracket 200. A heat sink is provided on one side of the bracket 200, and the circuit board body 100 is mounted on the side of the bracket 200 away from the heat sink. The projected area of ​​the heat sink 201 along the stacking direction of the heat sink 201, the bracket 200, and the circuit board body 100 can cover the projected area of ​​the PIM and IGBT modules, so that the heat sink 201 can dissipate heat from the PIM of the compressor drive module 103 and the IGBT module of the fan drive module 104, thereby improving the stability of the operation of the compressor drive module 103 and the fan drive module 104.

[0032] In the operation of the drive circuit board provided in this application embodiment, by setting the compressor terminal 101 and fan terminal 102 at the edge of the circuit board body 100, and setting the compressor drive module 103 and fan drive module 104 above the compressor terminal 101 and fan terminal 102 respectively, and setting the switching power supply 106 adjacent to the compressor drive module 103 and fan drive module 104, the wiring distance between the switching power supply 106 and the compressor drive module 103 and fan drive module 104, and between the compressor terminal 101 and fan terminal 102 is shortened, thereby increasing the signal transmission speed from the switching power supply 106, the compressor drive module 103 and fan drive module 104 to the compressor terminal 101 and fan terminal 102, and improving the signal transmission efficiency of the circuit board.

[0033] This application also provides an air conditioning device, including a compressor, a fan, and a drive circuit board as described in the above embodiments. Since the drive circuit board has the above-mentioned technical effects, the air conditioning device including the drive circuit board also has the corresponding technical effects, which will not be elaborated here.

[0034] In the air conditioning equipment provided in this application, the compressor and fan are both located in the lower area of ​​the air conditioning equipment, and the drive circuit board is located above the compressor and fan. The drive circuit board is placed vertically, making the first direction vertical, thereby bringing the load terminals on the drive circuit board closer to the compressor and fan, shortening the wiring distance, and improving the signal transmission efficiency during the operation of the air conditioning equipment. The above specific examples illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of this application.

Claims

1. A driving circuit board, characterized in that, include: The circuit board body (100), load terminals, load drive module and switching power supply (106) are all disposed on the circuit board body (100); the load terminals are fixed at the edge of the circuit board body (100) and are used to connect the load; the load drive module is fixed on the circuit board body (100) and is electrically connected to the load terminals, and is disposed adjacent to the load terminals; the switching power supply (106) is fixed on the circuit board body (100) and is electrically connected to the load drive module, and is disposed adjacent to the load drive module; the switching power supply (106), the load drive module and the load terminals are distributed sequentially along a first direction, the switching power supply (106) is closest to the center of the circuit board body (100), and the first direction is consistent with one edge direction of the circuit board body (100).

2. The driving circuit board according to claim 1, characterized in that, The load terminals include compressor terminals (101) and fan terminals (102). The compressor terminal (101) is used to electrically connect the compressor; the fan terminal (102) is used to electrically connect the fan, and the compressor terminal (101) and the fan terminal (102) are distributed sequentially along a second direction; the second direction is consistent with the other edge direction of the circuit board body (100), and there is an angle between the second direction and the first direction.

3. The driving circuit board according to claim 2, characterized in that, The fan terminal block (102) includes a first fan terminal block (1021) and a second fan terminal block (1022); the first fan terminal block (1021) has multiple terminals forming a terminal block; the second fan terminal block (1022) is a screw-type terminal block.

4. The driving circuit board according to claim 2, characterized in that, The load drive module includes a compressor drive module (103) and a fan drive module (104). The compressor drive module (103) is disposed adjacent to the compressor terminal (101), and the compressor drive module (103) is electrically connected to the compressor terminal (101) and the switching power supply (106) respectively. The compressor drive module (103) and the compressor terminal (101) are distributed sequentially along the first direction. The fan drive module (104) is disposed adjacent to the fan terminal (102). The fan drive module (104) is electrically connected to the fan terminal (102) and the switching power supply (106) respectively. The fan drive module (104) and the fan terminal (102) are distributed sequentially along the first direction. The compressor drive module (103) and the fan drive module (104) are distributed sequentially along the second direction.

5. The driving circuit board according to claim 4, characterized in that, The compressor drive module (103) includes a PIM and a PIM drive chip. The output pin of the PIM drive chip is electrically connected to the input terminal of the PIM. The PIM and the PIM drive chip are distributed sequentially along the second direction. The wind turbine drive module (104) includes an IGBT module and an IGBT driver chip. The output pin of the IGBT driver chip is electrically connected to the input terminal of the IGBT module. The IGBT module and the IGBT driver chip are distributed sequentially along the first direction, and the IGBT driver chip is closer to the wind turbine terminal (102) than the IGBT module.

6. The driving circuit board according to claim 4, characterized in that, At least two first heat sinks (110) are arranged between the compressor terminal (101) and the compressor drive module (103), and the first heat sinks (110) are fixed on the circuit board body (100); The first heat sink (110) includes a U-shaped body portion, with a first connecting portion and a second connecting portion at both ends of the U-shaped body portion. The first connecting portion and the second connecting portion are inserted into the circuit board body, and there is a gap between the U-shaped body portion and the circuit board body (100). The extension direction of the central axis of the body portion of the U-shaped structure of at least two of the first heat sinks (110) is consistent with the direction of the etched copper wire between the compressor terminal (101) and the compressor drive module (103).

7. The driving circuit board according to claim 6, characterized in that, It also includes energy storage capacitors (105); The energy storage capacitor (105) is disposed on the circuit board body (100) along the first direction, and the energy storage capacitor (105) is far away from the compressor terminal (101) and the fan terminal (102). The area of ​​the energy storage capacitor (105) projected onto the compressor drive module (103) in the first direction is greater than the area of ​​the energy storage capacitor (105) projected onto the fan drive module (104). The energy storage capacitor (105) and the switching power supply (106) are distributed sequentially along the second direction.

8. The driving circuit board according to claim 7, characterized in that, The energy storage capacitor (105) includes a first energy storage capacitor (1051) and a second energy storage capacitor (1052). At least two second heat sinks (111) are arranged between the compressor drive module (103) and the first energy storage capacitor (1051). The second heat sinks (111) are fixed on the circuit board body (100). The extension direction of the central axis of the body portion of the at least two second heat sinks (111) is consistent with the direction of the etched copper line between the compressor drive module (103) and the first energy storage capacitor (1051). At least two third heat sinks (112) are arranged between the compressor drive module (103) and the second energy storage capacitor (1052). The third heat sinks (112) are fixed to the circuit board body (100). The extension direction of the central axis of the body portion of the at least two third heat sinks (112) is consistent with the direction of the etched copper line between the compressor drive module (103) and the second energy storage capacitor (1052). The structure of the second heat sink (111) and the third heat sink (112) is the same as that of the first heat sink (110).

9. The driving circuit board according to claim 7, characterized in that, A relay (107) is electrically connected between the energy storage capacitor (105) and the compressor drive module (103). The relay (107) is fixed to the circuit board body (100). The energy storage capacitor (105), the relay (107) and the compressor drive module (103) are distributed sequentially along the first direction.

10. The driving circuit board according to claim 7, characterized in that, It also includes a main chip (108), which is fixed on the circuit board body (100) and is located in the area enclosed by the compressor drive module (103), the fan drive module (104), the energy storage capacitor (105) and the switching power supply (106); Furthermore, the compressor drive module (103), the fan drive module (104), and the switching power supply (106) are all electrically connected to the main chip (108).

11. The driving circuit board according to claim 5, characterized in that, It also includes a bracket (200); a heat sink (201) is provided on one side of the bracket (200), and the circuit board body (100) is mounted on the side of the bracket (200) away from the heat sink (201); The projected area of ​​the heat sink (201) along the stacking direction of the heat sink (201), the bracket (200), and the circuit board body (100) covers the projected area of ​​the PIM and the IGBT module.

12. An air conditioning device, characterized in that, Includes a compressor, a fan, and a drive circuit board as described in any one of claims 1-11; The compressor and the fan are both located in the lower area of ​​the air conditioning equipment, and the drive circuit board is located above the compressor and the fan. The drive circuit board is placed vertically, and the first direction is the vertical direction.

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