Fan heat dissipation module of power equipment and power equipment

Abstract

The utility model discloses power equipment and a fan heat dissipation module of the power equipment, the fan heat dissipation module comprises a single bus and a plurality of fans, one end part of the bus is provided with a master control joint used for being connected with a fan control interface of the power equipment, and the other end part of the bus is connected with a first cable beam splitter; the plurality of fans comprise a first fan and a second fan, the first fan is connected to the first cable beam splitter through a first branch wire so as to be communicated with the bus, and the second fan is connected to the first cable beam splitter through a second branch wire so as to be communicated with the bus. The fan heat dissipation module is neat in wiring, low in cost and convenient to install.

Description

Technical Field

[0001] The utility model belongs to the technical field of electronic power, and particularly relates to a fan heat dissipation module for power equipment and the power equipment. Background Art

[0002] When multiple fans are needed for cooling in existing power equipment, each fan needs to be connected to the PCB board through separate wiring. This connection method does not show problems in the case of one or two fans, but when multiple fans are needed, the wire harnesses will increase. Each wire harness corresponds to a cable splitter, and each wire harness passes through a cable waterproof joint and enters the box body, resulting in extremely troublesome and complex wiring; due to EMC (electromagnetic compatibility) problems in the box body, magnetic rings need to be wound, resulting in messy wire harnesses inside the box body; moreover, multiple cables correspondingly require multiple connectors to be arranged on the PCB board, which is troublesome for wiring, occupies PCB space, and this design is extremely unfriendly to waterproofing, cost, worker operation, EMC, and on-site maintenance. Content of the Utility Model

[0003] In order to solve the above technical problems, the utility model provides a fan heat dissipation module and power equipment, with neat wiring, low cost and convenient installation.

[0004] To achieve the above object, the utility model adopts the following technical scheme:

[0005] A fan heat dissipation module for power equipment includes a single main line and multiple fans. One end of the main line is provided with a master control joint for connecting to the fan control interface of the power equipment, and the other end of the main line is connected to a first cable splitter; the multiple fans include a first fan and a second fan. The first fan is connected to the first cable splitter through a first branch line to communicate with the main line, and the second fan is connected to the first cable splitter through a second branch line to communicate with the main line.

[0006] Preferably, the multiple fans further include a third fan. A second cable splitter is provided on the second branch line, and the third fan is connected to the second cable splitter through a third branch line to communicate with the second branch line.

[0007] Preferably, the main line and each branch line respectively include an outer protective sleeve and multiple wires arranged in the outer protective sleeve. The multiple fans are connected in series, in parallel or in series-parallel through the multiple wires.

[0008] More preferably, the plurality of wires include a positive power transmission line and a negative power transmission line. The bus includes at least N positive power transmission lines and at least N negative power transmission lines, where N is the total number of fans. Each branch line includes one positive power transmission line and one negative power transmission line. The positive power transmission line in each branch line is connected to one positive power transmission line in the bus, and the negative power transmission line in each branch line is connected to one negative power transmission line in the bus. The plurality of wires further include a PWM signal transmission line and an FG signal transmission line. The bus includes at least N PWM signal transmission lines and at least N FG signal transmission lines, where N is the total number of fans. Each branch line includes one PWM signal transmission line and one FG signal transmission line. The PWM signal transmission line in each branch line is connected to one PWM signal transmission line in the bus, and the FG signal transmission line in each branch line is connected to one FG signal transmission line in the bus.

[0009] Preferably, the plurality of wires include a positive power transmission line and a negative power transmission line. The bus includes one positive power transmission line and one negative power transmission line. The positive power transmission lines in the first branch line and the second branch line are connected in series to connect to the positive power transmission line in the bus, and the negative power transmission lines in the first branch line and the second branch line are connected in series to connect to the negative power transmission line in the bus. The plurality of wires further include a PWM signal transmission line and an FG signal transmission line. The bus includes one PWM signal transmission line and one FG signal transmission line. The PWM signal transmission lines in the first branch line and the second branch line are connected in series to connect to the PWM signal transmission line in the bus, and the FG signal transmission lines in the first branch line and the second branch line are connected in series to connect to the FG signal transmission line in the bus.

[0010] Preferably, the plurality of wires include a positive power transmission line and a negative power transmission line. The bus includes one positive power transmission line and one negative power transmission line. The positive power transmission lines in the first branch line and the second branch line are connected in series to connect to the positive power transmission line in the bus, and the negative power transmission lines in the first branch line and the second branch line are connected in series to connect to the negative power transmission line in the bus. The plurality of wires further include a PWM signal transmission line and an FG signal transmission line. The bus includes one PWM signal transmission line and N FG signal transmission lines, where N is the total number of fans. The PWM signal transmission lines in the first branch line and the second branch line are connected in series to connect to the PWM signal transmission line in the bus. Each branch line includes one FG signal transmission line, and the FG signal transmission line in each branch line is connected to one FG signal transmission line in the bus.

[0011] Preferably, the plurality of wires include a positive power transmission line and a negative power transmission line. One positive power transmission line and one negative power transmission line are included in the main bus. The positive power transmission lines in the first branch line and the second branch line are connected in series to connect to the positive power transmission line of the main bus, and the negative power transmission lines in the first branch line and the second branch line are connected in series to connect to the negative power transmission line of the main bus. The plurality of wires further include a PWM signal transmission line and an FG signal transmission line. N PWM signal transmission lines and N FG signal transmission lines are included in the main bus, where N is the total number of fans. Each branch line includes one FG signal transmission line and one PWM signal transmission line. The FG signal transmission line in each branch line is connected to one FG signal transmission line in the main bus, and the PWM signal transmission line in each branch line is connected to one PWM signal transmission line in the main bus.

[0012] Preferably, the first cable splitter includes a housing. The housing is hollow and has three open wiring ends. The second end of the main bus is inserted into one of the wiring ends, and the first branch line and the second branch line are respectively inserted into the other two wiring ends.

[0013] Preferably, the fan heat dissipation module includes N fans and N - 1 cable splitters.

[0014] The present embodiment also adopts the following technical solution:

[0015] A power device includes a box body. The power device further includes the above-mentioned fan heat dissipation module, and the fan is located outside the box body.

[0016] Preferably, a cable waterproof joint is provided between the main bus and the box body, and the number of the cable waterproof joints is one. The number of the cable waterproof joints being only one not only reduces the cost but also improves the waterproof ability of the whole machine.

[0017] The present utility model adopts the above solution and has the following advantages compared with the prior art:

[0018] For the fan heat dissipation module of the power device of the present utility model, several fans are connected to the fan control interface of the power device through a main bus, avoiding mess caused by too many cables, with neater wiring, lower cost, and more convenient installation. Description of the Drawings

[0019] To more clearly illustrate the technical solution of the present utility model, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other accompanying drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 A schematic diagram of a power device according to an embodiment of the present utility model;

[0021] Figure 2 For Figure 1 The partial enlarged view at position A in

[0022] Figure 3 Another schematic diagram of a power device according to an embodiment of the present utility model;

[0023] Figure 4 For Figure 3 The partial enlarged view at position B in

[0024] Figure 5 A schematic diagram of a fan connected to a PCB board, where the positive power transmission line, negative power transmission line, PWM signal transmission line, and FG signal transmission line are all in series;

[0025] Figure 6 A schematic diagram of a fan connected to a PCB board, where the positive power transmission line, negative power transmission line, and PWM signal transmission line are in series, and the FG signal transmission line is in parallel;

[0026] Figure 7 A schematic diagram of a fan connected to a PCB board, where the positive power transmission line and negative power transmission line are in series, and the PWM signal transmission line and FG signal transmission line are in parallel;

[0027] Figure 8 A schematic diagram of a fan connected to a PCB board, where the positive power transmission line, negative power transmission line, PWM signal transmission line, and FG signal transmission line are all in parallel.

[0028] Among them,

[0029] 100. Power device;

[0030] 1. Cabinet; 2. First fan; 21. Second fan; 22. Third fan; 3. PCB board; 31. Fan control interface; 4. Bus; 41. Wire; 42. First branch line; 43. Second branch line; 44. Third branch line; 5. First cable splitter; 51. Wiring end; 52. Second cable splitter; 6. Cable waterproof joint. Specific implementation manners

[0031] The following elaborates on the preferred embodiments of the present utility model in conjunction with the accompanying drawings, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art. It should be noted here that the description of these embodiments is for helping to understand the present utility model, but does not constitute a limitation to the present utility model. In addition, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0032] Referring to Figures 1 to 8 As shown, this embodiment provides a power device 100, which can be a photovoltaic inverter, a photovoltaic energy storage integrated machine, a busbar box, etc. The power device 100 includes a box body 1, a PCB board 3 arranged in the inner cavity of the box body 1, and a fan heat dissipation module. The fan heat dissipation module includes a plurality of fans and a single bus 4. The number of buses 4 is only one, which avoids mess due to too many buses, has a neater wiring, lower cost, and is also more convenient for installation. The fans are located outside the box body 1, and the fan control interface 31 on the PCB board 3 is electrically connected to the fans to control the operation, speed, start / stop, etc. of the fans.

[0033] Further, a master control connector for connecting to the fan control interface 31 is provided at one end of the bus 4, and a first cable splitter 5 is connected to the other end. The fans include a first fan 2, a second fan 21, and a third fan 22. The first fan 2 is connected to the first cable splitter 5 through a first branch line 42 to communicate with the bus 4, and the second fan 21 is connected to the first cable splitter 5 through a second branch line 43 to communicate with the bus 4. The first cable splitter 5 includes a housing, the housing is hollow and has three open wiring ends 51. The second end of the bus 4 is inserted into one of the wiring ends, and the first branch line 42 and the second branch line 43 are respectively inserted into the other two wiring ends.

[0034] A second cable splitter 51 is provided on the second branch line 43, and the third fan 22 is connected to the second cable splitter 51 through a third branch line 44 to communicate with the second branch line 43. The bus 4 and each branch line respectively include an outer protective sleeve and a plurality of wires 41 arranged in the outer protective sleeve. The plurality of fans are connected in series, in parallel, or in series-parallel through the plurality of wires 41. The plurality of wires 41 are inserted into one fan control interface 31 on the PCB board 3, that is, the number of fan control interfaces 31 is one, and only one fan control interface 31 needs to be disassembled during on-site maintenance, making the maintenance fast and convenient.

[0035] Specifically, the wire 41 includes a positive power transmission line, a negative power transmission line, a PWM signal transmission line, and an FG signal transmission line. The positive power transmission line and the negative power transmission line control the switch of the fan. The PWM signal transmission line and the FG signal transmission line are respectively used to control the rotation speed of the fan and monitor the rotation speed of the fan in the fan. The two work together to enable the fan to accurately adjust the rotation speed according to the system requirements, while maintaining the stable operation of the system and good heat dissipation effect. In actual use, other signal lines can also be added or the existing signal lines can be deleted.

[0036] Furthermore, specifically, the number of fans in this embodiment is N and N≥2. The number of fans is not limited here. The same bus 4 can be used on multiple external fans at the same time. Only by adding or deleting fans can the materials be shared and the cost be reduced. When the number of fans is N, the number of cable splitters is N - 1. Compared with the prior art, the use of one cable splitter is reduced, and the cost is reduced. The cable splitters are evenly distributed beside each fan, avoiding the problem of occupying a large amount of space caused by the aggregation of cable splitters, and at the same time avoiding the problem of wire pressing when locking the fan cover because a large number of buses are piled up together.

[0037] The length of the first branch wire 42 is 45 - 55 mm, that is, the distance from the first fan 2 to the first cable splitter 5 is 45 - 55 mm. More specifically, the distance between the first fan 2 and the first cable splitter 5 is 50 mm. Specifically in this embodiment, reference can be made to Figure 1 as shown Figure 1 in which it is shown that there are seven fans outside the example box body. The wiring end distances from six of the fans to the cable splitter are very short, specifically 50 mm. Compared with the prior art, the length of the fan wire outlet is greatly reduced, saving the manufacturing cost; at the same time, it avoids the problems of mess and poor wiring caused by too many and too long fan wire outlets.

[0038] The number of wires 41 depends on the series and parallel connection modes of the positive power transmission line, negative power transmission line, PWM signal transmission line, and FG signal transmission line. Assume the number of fans is N. When the positive power transmission line, negative power transmission line, PWM signal transmission line, and FG signal transmission line are all in series, the number of wires 41 is equal to the number of fans, both being N. When the positive power transmission line, negative power transmission line, and PWM signal transmission line are in series and the FG signal transmission line is in parallel, the number of wires 41 is N + 3, where the number of FG signal transmission lines is N, and the number of positive power transmission lines, negative power transmission lines, and PWM leads is three each. When the positive power transmission line and negative power transmission line are in series and the PWM signal transmission line and FG signal transmission line are in parallel, the number of wires 41 is 2 + N×2, where the number of positive power transmission lines and negative power transmission lines is one each, and the number of PWM signal transmission lines and FG signal transmission lines is N each. When the positive power transmission line, negative power transmission line, PWM signal transmission line, and FG signal transmission line are all in parallel, the number of wires 41 is 4N, where the number of positive power transmission lines, negative power transmission lines, PWM signal transmission lines, and FG signal transmission lines is N each.

[0039] More specifically, taking four fans as an example, referring to Figure 5 As shown, when the positive power transmission line, negative power transmission line, PWM signal transmission line, and FG signal transmission line of each branch are all in series, the positive power transmission lines of each branch are connected in series to the positive power transmission line at bus 4, the negative power transmission lines of each branch are connected in series to the negative power transmission line at bus 4, the PWM signal transmission lines of each branch are connected in series to the PWM signal transmission line at bus 4, and the FG signal transmission lines of each branch are connected in series to the FG signal transmission line at bus 4. The positive power transmission line, negative power transmission line, PWM signal transmission line, and FG signal transmission line at bus 4 are each one, and the number of wires 41 is four. At this time, the bus is the thinnest. Referring to Figure 6 As shown, when the positive power transmission line, negative power transmission line, and PWM signal transmission line of each branch are in series and the FG signal transmission line of each branch is in parallel, the number of positive power transmission lines, negative power transmission lines, and PWM signal transmission lines at bus 4 is one, and the number of FG signal transmission lines is four. The number of wires 41 is seven. Referring to Figure 7 As shown, when the positive power transmission line and negative power transmission line of each branch are in series and the PWM signal transmission line and FG signal transmission line of each branch are in parallel, the number of positive power transmission lines and negative power transmission lines at bus 4 is one each, and the number of PWM signal transmission lines and FG signal transmission lines is four each. The number of wires 41 is ten. Referring to Figure 8As shown in the figure, when the positive power transmission lines, negative power transmission lines, PWM signal transmission lines, and FG signal transmission lines of each splitter are all connected in parallel, the positive power transmission line of each splitter is connected to one of the positive power transmission lines of the main bus 4, the negative power transmission line of each splitter is connected to one of the negative power transmission lines of the main bus 4, the PWM signal transmission line of each splitter is connected to one of the PWM signal transmission lines of the main bus 4, and the FG signal transmission line of each splitter is connected to one of the FG signal transmission lines of the main bus 4. There are four positive power transmission lines, four negative power transmission lines, four PWM signal transmission lines, and four FG signal transmission lines in the main bus 4, and the number of wires 41 is sixteen. At this time, the main bus is the thickest.

[0040] Currently, when a fan is connected to a PCB board, multiple wires are required, which occupy a large amount of space outside the box, the number of main buses is too large and chaotic, it is difficult to wind the EMC shielding around the magnetic ring, and it also causes waste of wires and increases costs. When multiple main buses pass through the box, as the number of main buses increases, the number of cable waterproof connectors also increases, and the risk of the waterproof ability of the whole machine decreasing also increases. This is mainly because when the number of cable waterproof connectors increases, the uncertain factors also increase, such as the silicone deforming and not being pressed together, resulting in poor sealing. In response to the above problems, the power equipment of this embodiment only requires one main bus 4 to electrically connect multiple fans together, and only one relatively small cable waterproof connector 6 is needed when the main bus 4 passes through the box 1. Since there is only one main bus 4 for the internal wiring of the box 1, the wiring will become very regular, and it is also easier to wind the EMC magnetic ring, reducing the repetitive operations on the production line; the number of fan control interfaces 31 on the PCB board 3 changes from n to one, making the production line operation simpler.

[0041] The power equipment of this embodiment has at least the following advantages:

[0042] (1) The main bus 4 is reduced from N to one, with neat wiring, low cost, and convenient installation;

[0043] (2) Each fan is connected through a cable splitter, and the outgoing line length of the fan can be made very short, reducing production costs and avoiding the problem of multiple part numbers caused by different line lengths; at the same time, it avoids the problem of messy and difficult wiring due to too many and too long wires at the fan.

[0044] (3) The number of cable splitters required outside the box 1 is reduced from N to N - 1, and only one cable waterproof connector 6 on the box 1 and one fan control interface 31 on the PCB board 3 are needed, saving costs and installation time.

[0045] As shown in this specification and the claims, the terms "comprising" and "including" merely indicate the inclusion of the expressly identified steps and elements, which do not constitute an exclusive listing, and a method or device may also include other steps or elements. The term "and / or" as used herein includes any combination of one or more of the related listed items.

[0046] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or indirectly fixed or connected to the other feature. In addition, the descriptions such as up, down, left, and right used in the present utility model are only relative to the mutual positional relationship of the components of the present utility model in the drawings.

[0047] The above embodiments are only for illustrating the technical concept and features of the present utility model, and are a preferred embodiment. The purpose is to enable those skilled in the art to understand the content of the present utility model and implement it accordingly, and it should not be used to limit the protection scope of the present utility model. Any equivalent transformation or modification made according to the principle of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A fan heat dissipation module for electric power equipment, characterized in that: It includes a single bus and multiple fans, one end of the bus is provided with a master control connector for connecting to the fan control interface of the power equipment, and the other end of the bus is connected to a first cable splitter; the multiple fans include a first fan and a second fan, the first fan is connected to the first cable splitter through a first branch line to communicate with the bus, and the second fan is connected to the first cable splitter through a second branch line to communicate with the bus.

2. The fan heat dissipation module according to claim 1, characterized in that: The plurality of fans further include a third fan. A second cable splitter is disposed on the second branch line. The third fan is connected to the second cable splitter through a third branch line to communicate with the second branch line.

3. The fan heat dissipation module according to claim 1, characterized in that: The bus and each branch line respectively include an outer protective cover and a plurality of wires arranged in the outer protective cover, and the plurality of fans are connected in series, in parallel or in series and in parallel through the plurality of wires.

4. The fan heat dissipation module according to claim 3, characterized in that: The multiple conductors include positive power transmission lines and negative power transmission lines, the bus includes at least N positive power transmission lines and at least N negative power transmission lines, N is the total number of fans, each branch includes one positive power transmission line and one negative power transmission line, the positive power transmission line in each branch is connected to a positive power transmission line in the bus, and the negative power transmission line in each branch is connected to a negative power transmission line in the bus; the multiple conductors also include PWM signal transmission lines and FG signal transmission lines, the bus also includes N PWM signal transmission lines and N FG signal transmission lines, N is the total number of fans, each branch includes one PWM signal transmission line and one FG signal transmission line, the PWM signal transmission line in each branch is connected to a PWM signal transmission line in the bus, and the FG signal transmission line in each branch is connected to a FG signal transmission line in the bus.

5. The fan heat dissipation module according to claim 3, characterized in that: The multiple conductors include a positive power transmission line and a negative power transmission line, the bus includes one positive power transmission line and one negative power transmission line, the positive power transmission line in the first branch line and the positive power transmission line in the second branch line are connected in series to be connected to the positive power transmission line of the bus, and the negative power transmission line in the first branch line and the negative power transmission line in the second branch line are connected in series to be connected to the negative power transmission line of the bus; the multiple conductors also include a PWM signal transmission line and an FG signal transmission line, the bus includes one PWM signal transmission line and one FG signal transmission line, the PWM signal transmission line in the first branch line and the PWM signal transmission line in the second branch line are connected in series to be connected to the PWM signal transmission line of the bus, and the FG signal transmission line in the first branch line and the FG signal transmission line in the second branch line are connected in series to be connected to the FG signal transmission line of the bus.

6. The fan heat dissipation module according to claim 3, characterized in that: The multiple conductors include a positive power transmission line and a negative power transmission line, the bus includes one positive power transmission line and one negative power transmission line, the positive power transmission line in the first branch line and the positive power transmission line in the second branch line are connected in series to be connected to the positive power transmission line of the bus, and the negative power transmission line in the first branch line and the negative power transmission line in the second branch line are connected in series to be connected to the negative power transmission line of the bus; the multiple conductors also include a PWM signal transmission line and an FG signal transmission line, the bus includes one PWM signal transmission line and N FG signal transmission lines, N is the total number of fans, the PWM signal transmission line in the first branch line and the PWM signal transmission line in the second branch line are connected in series to the PWM signal transmission line of the bus, each branch line includes one FG signal transmission line, and the FG signal transmission line in each branch line is connected to one FG signal transmission line in the bus.

7. The fan heat dissipation module according to claim 3, characterized in that: The multiple conductors include a positive power transmission line and a negative power transmission line, the bus includes one positive power transmission line and one negative power transmission line, the positive power transmission line in the first branch line and the positive power transmission line in the second branch line are connected in series to be connected to the positive power transmission line of the bus, and the negative power transmission line in the first branch line and the negative power transmission line in the second branch line are connected in series to be connected to the negative power transmission line of the bus; the multiple conductors also include a PWM signal transmission line and an FG signal transmission line, the bus includes N PWM signal transmission lines and N FG signal transmission lines, N is the total number of fans, each branch line includes one FG signal transmission line and one PWM signal transmission line, the FG signal transmission line in each branch line is connected to an FG signal transmission line in the bus, and the PWM signal transmission line in each branch line is connected to a PWM signal transmission line in the bus.

8. The fan heat dissipation module according to claim 1, characterized in that: The first cable splitter comprises a shell, which is hollow and has three open connection ends. The second end of the bus is plugged into one of the connection ends, and the first branch line and the second branch line are respectively plugged into the other two connection ends.

9. The fan heat dissipation module according to claim 1, characterized in that: The fan heat dissipation module includes N fans and N-1 cable splitters.

10. An electric power device, comprising a box, characterized in that: The electric power equipment further comprises a fan heat dissipation module as claimed in any one of claims 1 to 9, wherein the fan is located outside the box.

11. The electric power equipment according to claim 10, characterized in that: A cable waterproof connector is provided between the bus and the box, and the number of the cable waterproof connector is one.

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