Air conditioner power box

Abstract

The utility model relates to an air conditioner power box which comprises a box body. A first connecting socket and a second connecting socket are arranged on one side of the box body, and a third connecting socket is arranged on the opposite side of the box body; a first ventilation hole is formed in the side wall, provided with the first connecting socket, of the box body; a second ventilation hole is formed in the side wall, provided with the third connection socket, of the box body; more than two first cooling fans are arranged in the cavity of the box body, all the first cooling fans are opposite to the first ventilation holes, and the air inlet sides of all the first cooling fans face the first ventilation holes and are suitable for introducing fresh air through the first ventilation holes; and a second cooling fan is arranged in the cavity of the box body, the second cooling fan is opposite to the second ventilation hole, and the air blowing side of the second cooling fan faces the second ventilation hole, so that hot air can be blown out through the second ventilation hole.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of direct-current-to-direct-current power supply, and particularly relates to an air conditioner power supply box. BACKGROUND

[0002] DC / DC module power supply equipment is widely used in household appliances, automotive electronics, aerospace and other fields and is also applied to communication fields such as mobile communication, microwave communication, optical transmission and routers. The DC / DC module power supply can convert the voltage of direct-current power supply into the working voltage required by load equipment. With the development of electronic equipment, small DC / DC module power supplies are increasingly common. However, as the volume of the DC / DC module power supply equipment decreases, the electronic components inside the equipment are more compact. If the heat dissipation of the equipment is poor, the heat cannot be transmitted in time, and the internal electronic components are at risk of being burned out, which seriously affects the service life of the DC / DC module power supply equipment.

[0003] Therefore, how to improve the heat dissipation effect of the DC / DC module power supply equipment becomes a problem to be solved. SUMMARY

[0004] Therefore, the application provides an air conditioner power supply box.

[0005] According to an aspect of the application, an air conditioner power supply box is provided, which comprises a box body.

[0006] The box body is provided with a direct-current fuse, an input common-mode inductor, an IGBT unit and a voltage conversion unit arranged in sequence.

[0007] The box body is provided with a first connection socket and a second connection socket on one side, and a third connection socket on the opposite side.

[0008] A first air vent is formed in the side wall of the box body provided with the first connection socket; and a second air vent is formed in the side wall of the box body provided with the third connection socket.

[0009] Two or more first cooling fans are arranged in the cavity of the box body, all the first cooling fans are opposite to the first air vent, and the air inlet sides of all the first cooling fans are directed towards the first air vent, so that fresh air can be introduced through the first air vent.

[0010] A second cooling fan is arranged in the cavity of the box body, the second cooling fan is opposite to the second air vent, and the air outlet side of the second cooling fan is directed towards the second air vent, so that hot air can be blown out through the second air vent.

[0011] A first radiator is arranged below the input common-mode inductor; and a second radiator is arranged below the voltage conversion unit.

[0012] In a possible implementation, the box is provided with an upper cover; the top of the box is provided with an opening matched with the upper cover, and the upper cover is detachably connected with the box.

[0013] In a possible implementation, the box is provided with an upper cover; the top of the box is provided with an opening matched with the upper cover, and the upper cover is detachably connected with the box.

[0014] In a possible implementation, the first heat sink and the second heat sink are both profile heat sinks.

[0015] In a possible implementation, the first heat sink and the second heat sink are both profile heat sinks.

[0016] In a possible implementation, the first heat sink and the second heat sink are both profile heat sinks.

[0017] In a possible implementation, the box is provided with a DC fuse, and the DC fuse is arranged adjacent to the input common-mode inductor.

[0018] In a possible implementation, the box is provided with an input filter inductor; the input filter inductor is arranged on the first heat sink and adjacent to the input common-mode inductor.

[0019] Beneficial effects: The box is suitable for isolating and protecting internal electronic components from dust pollution. The first and second connection sockets on one side of the box are suitable for connecting the DC to be converted. The third connection socket of the box is suitable for outputting the converted DC. The first heat sink on the side wall of the box is suitable for drawing fresh air from the outside through the first air vent into the cavity of the box. The second heat sink on the side wall of the opposite side of the box is suitable for blowing the hot air inside the box out of the second air vent. Under the action of the first heat sink and the second heat sink, a strong air flow can be formed in the box, thereby removing the heat generated by the electronic components in the box. The input common-mode inductor and the transformer unit are high-power devices, and the first and second heat sinks are arranged below them, respectively. The heat generated by the input common-mode inductor and the transformer unit can be quickly transferred to the first and second heat sinks, and then quickly removed by the air flow in the box. The compact overall equipment structure of the present application also ensures the heat dissipation effect of the equipment, which can effectively improve the overall service life of the equipment.

[0020] Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the present application and serve to explain the principles of the present application.

[0022] Figure 1 A main structure diagram of the air conditioner power supply box according to an embodiment of the present application is shown;

[0023] Figure 2 A side view of the air conditioner power supply box according to an embodiment of the present application is shown;

[0024] Figure 3 A side view of the air conditioner power supply box according to an embodiment of the present application is shown;

[0025] Figure 4 A side view of the air conditioner power supply box according to an embodiment of the present application is shown;

[0026] Figure 5 A top view of the air conditioner power supply box according to an embodiment of the present application is shown;

[0027] Figure 6 A front view of the air conditioner power supply box according to an embodiment of the present application is shown;

[0028] Figure 7 An internal structure diagram of the air conditioner power supply box according to an embodiment of the present application is shown;

[0029] Figure 8 An internal partial structure diagram of the air conditioner power supply box according to an embodiment of the present application is shown;

[0030] Figure 9 An internal structure diagram of the air conditioner power supply box according to an embodiment of the present application is shown;

[0031] Figure 10 A circuit diagram of the air conditioner power supply box according to an embodiment of the present application is shown.

[0032] The box 100, the upper cover 101, the right angle plate 103, the connecting rod 104, the first ventilation hole 105, the first connecting socket 27, the second connecting socket 26, the third connecting socket 28, the second ventilation hole 106, the first cooling fan 25, the second cooling fan 24, the first radiator 1, the direct current fuse 2, the input filter inductor 3, the input common mode inductor 4, the contactor 5, the first diode 6, the thyristor module 7, the thyristor-to-diode connecting row 8, the support capacitor 9, the high-frequency absorption capacitor 11, the full-bridge IGBT 12, the IGBT driver 13, the first direct-current isolation capacitor 14, the high insulator 18, the direct-current isolation capacitor fixing row 19, the output filter inductor 20, the first transformer 211, the second transformer 212, the second radiator 23, the first output voltage stabilizing filter capacitor 171, the second output voltage stabilizing filter capacitor 172, the first direct-current isolation capacitor 14, the second direct-current isolation capacitor 16, the diode layering female row 15, the first voltage sensor 30, the second voltage sensor 31, the double-face wire protection coil 32, the second diode 61, the third diode 62, the fourth diode 63, the fifth diode 64, the switching power supply 39, the second current sensor 374, the first transformer primary side current sensor 372, the second transformer primary side current sensor 373, the first resistor 413, the second resistor 412, the third resistor 411, the hexagonal isolation column 43, the first insulating baffle 33, the DC+ row 44, the second insulating baffle 46, the third insulating baffle 47. DETAILED DESCRIPTION

[0033] Various exemplary embodiments, features, and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numbers in the drawings indicate functionally similar or identical elements. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0034] It should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application or simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0037] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented without certain specific details. In some instances, methods, means, components, and circuits well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0038] Figure 1 This application shows a main structural diagram of the air conditioner power supply box according to an embodiment of the present application; as shown Figure 1 As shown, an air conditioner power supply box includes: a box body 100; inside the box body 100 are arranged in sequence a DC fuse 2, an input common mode inductor 4, a thyristor module 7, an IGBT unit, and a transformer unit, with the input terminal of the input common mode inductor 4 electrically connected to a first connection socket 27 to receive the DC power to be converted; the output terminal of the input common mode inductor 4 electrically connected to the input terminal of the DC fuse 2; the output terminal of the DC fuse 2 electrically connected to the input terminal of the thyristor module 7, the output terminal of the thyristor module 7 electrically connected to the input terminal of the IGBT unit, the output terminal of the IGBT unit electrically connected to the input terminal of the transformer unit, and the output terminal of the transformer unit electrically connected to a third connection socket 28 to output the converted DC power. A first connecting socket 27 and a second connecting socket 26 are provided on one side of the enclosure 100, and a third connecting socket 28 is provided on the opposite side of the enclosure 100; a first ventilation hole 105 is provided on the side wall of the enclosure 100 where the first connecting socket 27 is provided; a second ventilation hole 106 is provided on the side wall of the enclosure 100 where the third connecting socket 28 is provided; two or more first cooling fans 25 are provided inside the cavity of the enclosure 100, all of the first cooling fans 25 are opposite to the first ventilation hole 105 and the air intake side of all the first cooling fans 25 faces the first ventilation hole 105, which is suitable for introducing fresh air through the first ventilation hole 105; a second cooling fan 24 is provided inside the cavity of the enclosure 100, the second cooling fan 24 is opposite to the second ventilation hole 106 and the air blowing side of the second cooling fan 24 faces the second ventilation hole 106, which is suitable for blowing out hot air through the second ventilation hole 106; a first heat sink 1 is provided below the input common mode inductor 4; a second heat sink 23 is provided below the transformer unit.

[0039] Here, it needs to be explained that the present application is applicable to provide working power supply for air conditioning equipment; the box body 100 is applicable to isolate and protect the internal electronic components from dust pollution, and the box body 100 is provided with a first connecting socket 27 and a second connecting socket 26 on one side, which are applicable to connect the direct current to be converted; the third connecting socket 28 of the box body 100 is applicable to output the converted direct current; the first heat dissipation fan 25 on the side wall of the box body 100 is applicable to suck the fresh air outside into the cavity inside the box body 100 through the first ventilation hole 105, and the second heat dissipation fan 24 on the side wall of the opposite side of the box body 100 is applicable to blow the hot air inside the box body 100 out of the second ventilation hole 106. Under the action of the air supply of the first heat dissipation fan 25 and the air suction of the second heat dissipation fan 24, a large wind flow can be formed in the box body 100, so as to take away the heat emitted by the electronic components in the box body 100. The input common mode inductor 4 and the transformer unit are high-power devices, and the first heat sink 1 and the second heat sink 23 are respectively arranged below the input common mode inductor 4 and the transformer unit. The heat emitted by the input common mode inductor 4 and the transformer unit can be quickly transferred to the first heat sink 1 and the second heat sink 23, and the heat can be quickly taken out through the wind flow in the box body 100. The overall equipment structure of the present application is compact, and the heat dissipation effect of the equipment is also ensured, so that the service life of the overall equipment can be effectively improved.

[0040] In a possible implementation, the box body 100 is provided with an upper cover 101; the top of the box body 100 is provided with an opening, and the opening is matched with the upper cover 101. The upper cover 101 is detachably connected with the box body 100. Figure 1 As shown in Figure 9 The main body of the box body 100 is in a rectangular structure, and the top of the box body 100 is in an open structure. The upper cover 101 is buckled on the top of the box body 100, so as to seal and isolate the electronic components inside the box body 100. At the same time, the detachable arrangement of the upper cover 101 facilitates the opening of the box body 100 at any time to maintain and repair the internal equipment.

[0041] In a possible implementation, the box body 100 and the upper cover 101 are detachably connected through two or more than two buckles 102.

[0042] In a possible implementation, as shown in the figure, the first connecting socket 27 and the second connecting socket 26 are fixed on the side wall of the box body 100, and the positions where the first connecting socket 27 and the second connecting socket 26 are installed on the box body 100 are provided with through holes, so that the electric wires can be introduced into the box body 100 from the first connecting socket 27 and the second connecting socket 26. Similarly, the position where the third connecting socket 28 is installed on the box body 100 is also provided with a through hole, so that the electric wires can be led out of the box body 100 from the third connecting socket 28.

[0043] Further, the first connection socket 27 is an input main connection socket suitable for connecting to a main circuit; the second connection socket 26 is an input secondary line connector socket suitable for connecting to a secondary circuit; the model of the first connection socket 27 is HIR6-Z1M2K1-01-BJQSY; and the model of the second connection socket 26 is HIR6-Z2M25K1-01-BJQSY.

[0044] In a possible implementation, the first heat dissipation fan 25 is provided with five first heat dissipation fans 25 arranged adjacently. As shown in Figure 4 , the first heat dissipation fan 25 is arranged in sequence along the body width direction of the box body 100, and the four corners of the first heat dissipation fan 25 are fixedly connected to the side wall of the box body 100 by means of bolt connection; and the five first heat dissipation fans 25 are located below the first connection socket 27 and the second connection socket 26. As shown in Figure 2 , the first ventilation hole 105 is composed of a plurality of long holes arranged in an array. Further, the model of the first heat dissipation fan 25 is AS06024hb387100.

[0045] In a possible implementation, the third connection socket 28 is an output main connection socket suitable for outputting converted direct current; and the model of the third connection socket 28 is HIR6-Z1M2K2-01-BJQSY.

[0046] In a possible implementation, as shown in Figure 3 , the second heat dissipation fan 24 is provided with two second heat dissipation fans 24, and the second ventilation hole 106 is provided with two second ventilation holes 106; the two second heat dissipation fans 24 and the two second ventilation holes 106 are arranged opposite to each other. As shown in Figure 9 , the two second heat dissipation fans 24 are arranged in sequence along the body width direction of the box body 100, and the four corners of the second heat dissipation fan 24 are fixedly connected to the inner side wall of the box body 100; as shown in Figure 3 , each second ventilation hole 106 is composed of a plurality of circular holes arranged in an array, and the two second ventilation holes 106 are located opposite to the two second heat dissipation fans 24 to improve the flow rate of the wind. Further, the model of the second heat dissipation fan 24 is AS12024MB25A100.

[0047] In a possible implementation, the box body 100 is provided with a support on both sides. As shown in Figure 1 , each support comprises two right angle plates 103 and a connecting rod 104; the two right angle plates 103 are respectively arranged at the bottom two corners of one side of the box body 100, and the connecting rod 104 is arranged between the two right angle plates 103. The right angle plate 103 is provided with a bolt hole suitable for fixing the box body 100 as a whole at the installation position.

[0048] In a possible implementation, the first heat dissipation fan 25 and the second heat dissipation fan 23 are both profile heat dissipation fans.

[0049] In one possible implementation, a DC fuse 2 (BF) is also provided inside the enclosure 100; such as Figure 10 As shown, the input terminal of DC fuse 2 (BF) is electrically connected to the first connection socket 27, and the output terminal of DC fuse 2 (BF) is electrically connected to the input terminal of input common-mode inductor 4 (L1). Figure 7 As shown, the DC fuse 2 (BF) is located inside the cavity of the enclosure 100 and near the first cooling fan 25. It should be noted that the DC fuse 2 (BF) is used to protect circuits and equipment from overcurrent damage. Furthermore, the model number of the DC fuse 2 is: Bussman 170M2051 63A / 2000Vdc 63A / 2000V.

[0050] In one possible implementation, the enclosure 100 also includes an input common-mode inductor 4 (L1); such as Figure 10 As shown, the first input terminal of the input common-mode inductor 4 (L1) is electrically connected to the output terminal of the DC fuse 2 (BF), and the second input terminal of the input common-mode inductor 4 (L1) is electrically connected to the second connection socket 26; the first output terminal of the input common-mode inductor 4 (L1) is electrically connected to the first current sensor 371 (U1). Figure 7 As shown, the input common-mode inductor 4 (L1) is positioned adjacent to the DC fuse 2 (BF). It should be noted that the input common-mode inductor 4 (L1) is used to suppress EMC interference. Furthermore, the model number of the input common-mode inductor 4 (L1) is: KDCMI18A2mH 18A / 2mH.

[0051] In one possible implementation, a first current sensor 371 (U1) is also provided inside the housing 100; such as Figure 10 As shown, the first current sensor 371 (U1) is connected in series between the first output terminal of the input common-mode inductor 4 (L1) and the contactor 5 (K1); Figure 8 As shown, the first current sensor 371 (U1) is located below the first heat sink 1. It should be noted that the first current sensor 371 (U1) is suitable for detecting the current of the DC power to be converted. Furthermore, the model number of the first current sensor 371 (U1) is HIB-C15-100P2O9.

[0052] In one possible implementation, a first voltage sensor 30 (U2) is also provided inside the housing 100; such as Figure 10 As shown, one end of the first voltage sensor 30 (U2) is electrically connected between the output terminal of the first current sensor 371 (U1) and the contactor 5 (K1), and the other end of the first voltage sensor 30 (U2) is electrically connected to the second output terminal of the input common-mode inductor 4 (L1).Figure 8 As shown in the figure, the first voltage sensor 30 (U2) is arranged below the first radiator 1 and adjacent to the first current sensor 371 (U1). It should be noted that the first voltage sensor 30 (U2) is suitable for detecting the voltage of the direct current to be converted, and further, the model of the first voltage sensor 30 (U2) is GDU1-C53-2000P10 19.

[0053] In a possible implementation, the box 100 is further provided with a contactor 5 (K1); as Figure 10 As shown in the figure, one end of the contactor 5 (K1) is electrically connected to the current output end of the first current sensor 371 (U1), and the other end of the contactor 5 (K1) is electrically connected to the thyristor module 7 (Q5). As Figure 7 As shown in the figure, the contactor 5 (K1) is arranged inside the cavity of the box 100 and adjacent to the input common mode inductor 4 (L1). It should be noted that the contactor 5 (K1) is suitable for controlling the on-off of the main circuit, and further, the model of the contactor 5 (K1) is Shartbao CM1115|01.

[0054] In a possible implementation, the box 100 is further provided with a thyristor module 7 (Q5); as Figure 10 As shown in the figure, the input end of the thyristor module 7 (Q5) is electrically connected to the contactor 5 (K1); the output end of the thyristor module 7 (Q5) is electrically connected to the input end of the diode (D1). As Figure 7 As shown in the figure, the thyristor module 7 (Q5) is arranged adjacent to the first voltage sensor 30 (U2). It should be noted that the thyristor module 7 (Q5) can be used as a power switch, control the on-off of the circuit, adjust the current and voltage in the circuit, and further, the model of the thyristor module 7 (Q5) is Taoji MT110A-3600V-216F33600V / 110A.

[0055] In a possible implementation, the box 100 is further provided with a first resistor 413 (R1); the first resistor 413 (R1) is connected in parallel with the thyristor module 7 (Q5). As Figure 9 As shown in the figure, the first resistor 413 (R1) is arranged on the inner side wall of the box 100. Further, the model of the first resistor 413 (R1) is RXLG-300W-60RJ.

[0056] In a possible implementation, the box 100 is further provided with a first diode 6 (D1); as Figure 10 As shown in the figure, the input end of the first diode 6 (D1) is electrically connected to the output end of the thyristor module 7 (Q5); the output end of the first diode 6 (D1) is electrically connected to the input end of the input filter inductor 3 (L2). As Figure 7As shown, the first diode 6 (D1) is arranged adjacent to the thyristor module 7 (Q5). The model of the first diode 6 (D1) is MacMic MMF100S170B, 1700V / 100A.

[0057] In a possible implementation, the box 100 is further provided with an input filter inductor 3 (L2); as shown in Figure 7 As shown, the input filter inductor 3 (L2) is arranged on the first heat sink 1 and adjacent to the input common mode inductor 4 (L1). As shown in Figure 10 As shown, the input end of the input filter inductor 3 (L2) is electrically connected to the output end of the first diode 6 (D1), and the output end of the input filter inductor 3 (L2) is electrically connected to the IGBT unit. It should be noted that the input filter inductor 3 (L2) is suitable for filtering, denoising and protecting the components in the circuit; further, the model of the input filter inductor 3 (L2) is KDCMI18A1mH 18A / 1mH.

[0058] In a possible implementation, the box 100 is further provided with a first capacitor unit; the first capacitor unit is arranged adjacent to the thyristor module 7. Further, the first capacitor unit comprises: support capacitors 9 (C1, C2, C3, C4) arranged in sequence; as shown in Figure 10 As shown, the support capacitor 9 (C2) is electrically connected to the inductor L2, the support capacitor 9 (C1) is connected in parallel with the support capacitor 9 (C2), the support capacitor 9 (C4) is electrically connected to the inductor L1, and the support capacitor 9 (C3) is connected in parallel with the support capacitor 9 (C4). The models of the support capacitors 9 (C1), 9 (C2), 9 (C3), and 9 (C4) are all EACO SHP-1100-300-FSB1.

[0059] In a possible implementation, the box 100 is further provided with a second resistor 412 (R2) and a third resistor 411 (R3); as shown in Figure 10 As shown, the second resistor 412 (R2) is connected in parallel with the support capacitor 9 (C2); the third resistor 411 (R3) is connected in parallel with the support capacitor 9 (C4). As shown in Figure 9 As shown, the second resistor 412 (R2) and the third resistor 411 (R3) are both arranged on the inner side wall of the box 100. Further, the models of the second resistor 412 (R2) and the third resistor 411 (R3) are both RXLG-100W-400K J.

[0060] In a possible implementation, the box 100 is further provided with a second voltage sensor 31 (U3); the second voltage sensor 31 (U3) is connected in parallel with the support capacitor 9 (C3); as shown in Figure 8As shown, the first voltage sensor 30 (U2) and the second voltage sensor 31 (U3) are arranged adjacently below the first heat sink 1. Furthermore, the model number of the second voltage sensor 31 (U3) is GDU1-C53-1000P1O19.

[0061] In one possible implementation, the enclosure 100 also houses IGBT units. The IGBT units include four consecutive full-bridge IGBTs 12 (Q1, Q2, Q3, Q4); as shown below. Figure 10 As shown, the full-bridge IGBT12 (Q1) is electrically connected to the input filter inductor 3 (L2), and the two full-bridge IGBT12s (Q1, Q2) are connected in parallel; the full-bridge IGBT12 (Q3) is electrically connected to the second output terminal of the input common-mode inductor 4 (L1), and the two full-bridge IGBT12s (Q3, Q4) are connected in parallel. Furthermore, the model of all four full-bridge IGBT12s (Q1, Q2, Q3, Q4) is: Infineon FF300R17ME4 1700V / 300A. Figure 7 As shown, four full-bridge IGBT12s are positioned on one side of the second capacitor unit.

[0062] In one possible implementation, a second capacitor unit is also provided inside the housing 100; the second capacitor unit is arranged adjacent to the IGBT unit. The second capacitor unit includes four high-frequency absorption capacitors 11 (C5, C6, C7, C8) arranged sequentially and adjacently; as shown... Figure 10 As shown, high-frequency absorption capacitor 11 (C5) is connected in parallel with full-bridge IGBT 12 (Q1); high-frequency absorption capacitor 11 (C6) is connected in parallel with full-bridge IGBT 12 (Q2); high-frequency absorption capacitor 11 (C7) is connected in parallel with full-bridge IGBT 12 (Q3); high-frequency absorption capacitor 11 (C8) is connected in parallel with full-bridge IGBT 12 (Q4); as... Figure 7 As shown, four high-frequency absorption capacitors 11 (C5, C6, C7, C8) are arranged adjacent to four full-bridge IGBTs 12 (Q1, Q2, Q3, Q4). It should be noted that the first capacitor unit is suitable for absorbing high-frequency waves from the full-bridge IGBTs 12. Furthermore, the four high-frequency absorption capacitors 11 (C5, C6, C7, C8) are all model EACOSTM-1700-1.0-UP11, 1700V / 1uF.

[0063] In one possible implementation, the housing 100 also includes a first transformer primary current sensor 372 (U4) and a second transformer primary current sensor 373 (U5): For example... Figure 10As shown, the primary current sensor 372 (U4) of the first transformer is connected in series between the full-bridge IGBT 12 (Q2) and the first transformer 211 (T1); the primary current sensor 373 (U5) of the second transformer is connected in series between the full-bridge IGBT 12 (Q4) and the second transformer 212 (T2). Figure 8 As shown, the primary current sensor 372 (U4) of the first transformer and the primary current sensor 373 (U5) of the second transformer are positioned opposite each other below the output filter inductor 20. It should be noted that the primary current sensor 372 (U4) and the primary current sensor 373 (U5) are used to detect the primary current of the first transformer 211 (T1) and the primary current of the second transformer 212 (T2); furthermore, both the primary current sensor 372 (U4) and the primary current sensor 373 (U5) are model HIB-C15-100P2O10.

[0064] In one possible implementation, the housing 100 also includes a first DC blocking capacitor 14 (C9) and a second DC blocking capacitor 16 (C10); as shown Figure 10 As shown, the first DC blocking capacitor 14 (C9) is connected in series between the primary current sensor 372 (U4) of the first transformer and the first transformer 211 (T1); the second DC blocking capacitor 16 (C10) is connected in series between the primary current sensor 373 (U5) of the second transformer and the second transformer 212 (T2); as Figure 7 As shown, the first DC blocking capacitor 14 (C9) and the second DC blocking capacitor 16 (C10) are disposed opposite each other on both sides inside the housing 100. Furthermore, the first DC blocking capacitor 14 (C9) and the second DC blocking capacitor 16 (C10) are both model SLA-1000-20-64F8 1000V / 20uF / 48A.

[0065] In one possible implementation, the transformer unit includes: a first transformer 211 (T1) and a second transformer 212 (T2); as shown Figure 10As shown, one end of the primary winding of the first transformer 211 (T1) is electrically connected to the full-bridge IGBT 12 (Q1), and the other end is electrically connected to the full-bridge IGBT 12 (Q2). One end of the secondary winding of the first transformer 211 (T1) is electrically connected to the second diode 61 (D2), and the other end is electrically connected to the third diode 62 (D3). One end of the primary winding of the second transformer 212 (T2) is electrically connected to the full-bridge IGBT 12 (Q3), and the other end is electrically connected to the full-bridge IGBT 12 (Q4). One end of the secondary winding of the second transformer 212 (T2) is electrically connected to the fourth diode 63 (D4), and the other end is electrically connected to the fifth diode 64 (D5). Figure 7 As shown, the first transformer 211 (T1) and the second transformer 212 (T2) are arranged adjacently above the second radiator 23. It should be noted that the first transformer 211 (T1) and the second transformer 212 (T2) are used to convert the DC positive voltage on the main circuit and the DC negative voltage on the secondary circuit, respectively, and output the converted DC power. The model of both the first transformer 211 (T1) and the second transformer 212 (T2) is: Qingdao Ruikangda KDFBT15KW12K600S650 600v / 650v.

[0066] In one possible implementation, the housing 100 also includes a second diode 61 (D2), a third diode 62 (D3), a fourth diode 63 (D4), and a fifth diode 64 (D5); for example... Figure 10 As shown, the second diode 61 (D2) and the third diode 62 (D3) are connected in parallel; the fourth diode 63 (D4) and the fifth diode 64 (D5) are connected in parallel. Figure 7 and Figure 8 As shown, the second diode 61 (D2), the third diode 62 (D3), the fourth diode 63 (D4), and the fifth diode 64 (D5) are all located between the first DC blocking capacitor 14 (C9) and the second DC blocking capacitor 16 (C10), and all of them are of the MacMic MMF100S170B type, 1700V / 100A.

[0067] In one possible implementation, the enclosure 100 also includes an output filter inductor 20. The output filter inductor 20 is electrically connected to the third diode 62 (D3) and the fifth diode 64 (D5); the output filter inductor 20 is positioned above the primary current sensor 372 (U4) of the first transformer and the primary current sensor 373 (U5) of the second transformer. The output filter inductor 20 is a Qingdao Ruikangda KDDCI25A0.1mH.

[0068] In one possible implementation, the enclosure 100 also includes a first output voltage regulator and filter capacitor 171 (C15) and a second output voltage regulator and filter capacitor 172 (C16); for example Figure 10 As shown, the first output voltage regulator capacitor 171 (C15) and the second output voltage regulator capacitor 172 (C16) are both electrically connected between the main circuit and the secondary circuit; Figure 7 As shown, the first output voltage regulator and filter capacitor 171 (C15) and the second output voltage regulator and filter capacitor 172 (C16) are arranged adjacent to each other on the side of the second DC blocking capacitor 16 (C10). Furthermore, both the first output voltage regulator and filter capacitor 171 (C15) and the second output voltage regulator and filter capacitor 172 (C16) are model EACO SHP-700-700-FSB1, 700V / 700uF.

[0069] In one possible implementation, a second current sensor 374 (U6) is also provided inside the housing 100; such as Figure 10 As shown, the second current sensor 374 (U6) is connected in series with the current output wire. Figure 6 As shown, the second current sensor 374 (U6) is located in one corner inside the housing 100. Furthermore, the model number of the second current sensor 374 (U6) is HIB-C15-100P2O9.

[0070] In one possible implementation, a switching power supply 39 (D1) is also provided inside the enclosure 100; such as Figure 8 As shown, the switching power supply 39 (D1) is located below the second heat sink 23. The power output terminal of the switching power supply 39 (D1) is electrically connected to the first cooling fan 25 and the second cooling fan 24 to supply power to the first cooling fan 25 and the second cooling fan 24.

[0071] In one possible implementation, a first radiator 1 is also provided inside the housing 100; such as Figure 9 As shown, the first heat sink 1 is installed inside the housing 100. The input common mode inductor 4 (L1) and the input common mode inductor 4 (L2) are placed above the first heat sink 1. The first voltage sensor 30 (U2), the second voltage sensor 31 (U3) and the thyristor driver 34 are placed below the first heat sink 1.

[0072] In one possible implementation, a second radiator 23 is also provided inside the housing 100; the second radiator 23 and the first radiator 1 are located at opposite ends within the housing 100. Figure 7As shown, the second heat sink 23 is arranged in the box 100, and the first transformer 211 (T1) and the second transformer 212 (T2) are arranged above the second heat sink 23; and the switching power supply 39 (D1) and the two RCD absorption resistors 50 are arranged below the first heat sink 1.

[0073] In a possible implementation, the box 100 is further provided with a thyristor-to-diode connection row 8; and the thyristor module 7 (Q5) is electrically connected to the first diode 6 (D1) through the thyristor-to-diode connection row 8.

[0074] In a possible implementation, the box 100 is further provided with four IGBT drivers 13 arranged adjacently; the four IGBT drivers 13 are electrically connected to the four full-bridge IGBTs 12 respectively; and the four IGBT drivers 13 are arranged between the four full-bridge IGBTs 12 and the second diode 61 (D2), the third diode 62 (D3), the fourth diode 63 (D4), and the fifth diode 64 (D5).

[0075] In a possible implementation, the box 100 is further provided with an IGBT layering busbar 10; the IGBT layering busbar 10 is arranged on one side of the four IGBT drivers 13, and the four IGBT drivers 13 are electrically connected to the four full-bridge IGBTs 12 through the IGBT layering busbar 10.

[0076] In a possible implementation, the box 100 is further provided with a diode layering busbar 15; the second diode 61 (D2), the third diode 62 (D3), the fourth diode 63 (D4), and the fifth diode 64 (D5) are all arranged on the diode layering busbar 15.

[0077] In a possible implementation, the first direct-current blocking capacitor 14 (C9) and the second direct-current blocking capacitor 16 (C10) are both provided with a high insulator 18 and a direct-current blocking capacitor fixing row 19.

[0078] In a possible implementation, the box 100 is further provided with a double-sided wire protection coil 32; the double-sided wire protection coil 32 is arranged in a wire hole of the first heat sink 1, and is suitable for protecting the wire passing through the first heat sink 1.

[0079] In a possible implementation, the box 100 is further provided with a first insulating baffle 33; the first insulating baffle 33 is arranged around the output filter inductor 20. A support plate 201 is arranged below the output filter inductor 20, and the support plate 201 is suitable for supporting the output filter inductor 20 and isolating the first transformer primary current sensor 372 (U4) and the second transformer primary current sensor 373 (U5) below.

[0080] In a possible implementation, the box 100 is further provided with a thyristor drive 34, which is electrically connected with the thyristor module 7 (Q5) and is attached with an insulating paper.

[0081] In a possible implementation, the box 100 is further provided with six hexagonal isolation columns 43, which are provided with the control panel 36 and are suitable for supporting the control panel 36.

[0082] In a possible implementation, the box 100 is further provided with a DC+ row 44 and a second insulating baffle 46; the DC+ row 44 is arranged between the four supporting capacitors 9 of the first capacitor unit and the second insulating baffle 46, and the DC+ row 44 is of the model MJ-DCDC-18A2KV-V1.0. The second insulating baffle 46 is arranged between the DC+ row 44 and the thyristor module 7 (Q5).

[0083] In a possible implementation, the box 100 is further provided with a third insulating baffle 47, which is arranged between the DC contactor 5 (K1) and the DC fuse 2 (BF).

[0084] The above has described the embodiments of the present application, and the above description is exemplary, is not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles of the embodiments, practical application, or improvement of the technology in the market, or to enable other ordinary skilled in the art to understand the embodiments disclosed herein.

Claims

1. An air conditioner power supply box characterized by comprising: The utility model relates to a kind of DC fuse box, it include: Box; The box is equipped with direct-current fuse, input common mode inductor, IGBT unit, voltage transformation unit arranged in sequence in the box; The box is equipped with first connection socket and second connection socket on one side, and the opposite side of the box is equipped with third connection socket; The side wall of the box equipped with the first connection socket is provided with first vent hole;The side wall of the box equipped with the third connection socket is provided with second vent hole; The cavity of the box is equipped with two or more than first radiating fan, all the first radiating fan is opposite with the first vent hole, and the air inlet side of all the first radiating fan is towards the first vent hole, suitable for introducing fresh air through the first vent hole; The cavity of the box is equipped with second radiating fan, the second radiating fan is opposite with the second vent hole, and the blowing side of the second radiating fan is towards the second vent hole, suitable for blowing hot air through the second vent hole; The lower side of the input common mode inductor is equipped with first radiator;The lower side of the voltage transformation unit is equipped with second radiator.

2. The air conditioner power pack according to claim 1, characterized by The box is equipped with upper cover;The top of the box is equipped with opening, the opening is matched with the upper cover, and the upper cover is detachably connected with the box.

3. The air conditioner power pack according to claim 1, wherein Both sides of the box are equipped with support.

4. The air conditioner power pack according to claim 1, wherein The first radiator and the second radiator are profile radiator.

5. The air conditioner power pack according to claim 1, wherein The first radiating fan is equipped with five, and five first radiating fan is arranged adjacent.

6. The air conditioner power pack according to claim 1, wherein The second radiating fan is equipped with two, and the second vent hole is equipped with two;Two second radiating fan and two second vent hole are arranged opposite.

7. The air conditioner power pack according to claim 1, wherein The box is equipped with: direct-current fuse, and the direct-current fuse is arranged adjacent with the input common mode inductor.

8. The air conditioner power pack according to claim 1, wherein The box is equipped with: input filter inductor;The input filter inductor is arranged on the first radiator and arranged adjacent with the input common mode inductor.

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