POWER DISTRIBUTION UNIT WITH PRINTED CIRCUIT BOARD

Abstract

The utility model relates to power distribution units. The technical result is a reduction in the size of the power distribution unit. The power distribution unit comprises a power input, two power sockets, each having three plugs capable of being connected to a socket of an electrical connector and located inside the housing of said power distribution unit, and comprises a printed circuit board with sockets of a power connector soldered to said printed circuit board, into which each of at least some of said plugs is inserted. 8 cl., 1 fig.

Description

[0001] Field of technology to which the utility model belongs

[0002] The utility model relates to communications technology and can be used to reduce the dimensions of power distribution units used in telecommunications cabinets of server rooms and data processing centers.

[0003] Technology Level

[0004] The closest equivalent power distribution unit (PDU) for this utility model is the Elemy iPDU-6012 (details available online at https: / / www.elemy.ru / pdu / ipdu-6012). This power distribution unit contains a power input and power outlets for connecting equipment.

[0005] This PDU has a 45 mm front-to-rear distance. Since the dimensions of devices installed in telecommunications cabinets are critical for data centers, reducing the PDU's dimensions will reduce the cost of operating the data center.

[0006] How to connect power outlets to power buses using FASTON connectors is shown in the video https: / / ya.ru / video. / preview / 6648663222259449825?from_type=vast&parent-reqid=1772112109377978-566908035005688824 8-balancer-171eveler-kubr-yp-klg-91-BAL&text=Teardown+of-Han+APC+Switched+Rack+PDU+-+AP7921.

[0007] The essence of the utility model

[0008] The objective of this utility model is to develop a power distribution unit of reduced dimensions.

[0009] To achieve the specified technical result, a power distribution unit (PDU) is proposed, comprising a power supply input; at least two power supply sockets, each of which has a minimum of three plugs capable of being connected to a socket of an electrical connector and located inside the housing of the power distribution unit; characterized in that it comprises a printed circuit board with sockets of a power supply connector soldered to this printed circuit board, into which each of at least some of the aforementioned plugs is inserted.

[0010] In one embodiment of the present utility model, the sockets may be of type C13 or C19 of the IEC 60320 standard.

[0011] In addition, the socket plugs and PCB-soldered sockets can be FASTON type with a contact width of 4.8mm or 6.3mm.

[0012] In one embodiment of the present utility model, the printed circuit board may have a track to which a portion of the said sockets is soldered, connected to a protective grounding circuit connected to the protective grounding of the said power supply input.

[0013] In addition, the printed circuit board may have a track to which part of the said sockets is soldered, connected to the zero electrical circuit connected to the zero of the power supply input.

[0014] Additionally, the printed circuit board may have a track to which part of the mentioned sockets is soldered, connected to the electrical circuit of the phase connected to the phase of the power supply input.

[0015] In another embodiment, the printed circuit board may comprise an electrical contact containing an opening that is electrically connected to at least one of the said receptacles. Said electrical contact containing an opening may be a plated hole or a nut soldered to the printed circuit board.

[0016] Finally, next to each of at least some of the sockets electrically connected to the neutral or phase track, there is an electrical contact containing an opening electrically connected to the same electrical circuit as the socket located next to it.

[0017] Brief description of drawings

[0018] Fig. 1 shows an embodiment of the BRP according to the present utility model.

[0019] Detailed description of the utility model

[0020] IEC 60320 standard power connectors are widely used in the manufacture of power supply units (PDUs). Faston (Quick Fix, "blade") type connections are often used to connect these connectors to the power bus inside the PDU. For example, the RS PRO C13 Snap-In IEC Connector Socket RS Stock No.: 776-9138 (https: / / www.chipdip.ru / product / cl3-snap-in-iec-connector-socket-15a-250-v-rs-pro-8711086778) can be connected to the PDU power bus using three 6.3 mm standard Faston female connectors, where each of the three connectors has a wired connection to the phase, neutral, or ground, respectively.

[0021] It should be noted that the shortest FASTON sockets with a “flag” wire crimp (when the wire is perpendicular to the socket, for example, https: / / rn.strong.com.ru / 12109.html) have a length of 14.8 mm or more.

[0022] According to this utility model, a printed circuit board (PCB) jack, such as TE Connectivity 63969-1 (https: / / www.chipdip.ru / product / 63969-l-faston-250-uninsulated-female-spade-te-connectivity-8009880939), is used to connect the power connector plugs to the power and ground buses inside the power supply unit. This connector has a length (maximum overall dimension) of 12.19 mm. It is clear that the use of FASTON flag jacks and FASTON PCB jacks in both cases requires additional electrical insulation of the jacks and housing elements, but all other things being equal, the use of PCB-compatible jacks allows one of the overall dimensions (depth) of the power supply unit to be reduced by at least 2.5 mm.

[0023] One embodiment of the present utility model is shown in Fig. 1. On the front panel 1 of the power distribution unit (PDU) or otherwise PDU (power distribution unit) there are at least two sockets 2 (otherwise the device will not be a PDU, but an extension cord) of the IEC 60320 type (for example, C13 or C19), containing plugs capable of electrical connection to a socket of an electrical connector. On the printed circuit board 3, on which there are phase, neutral and ground tracks with a sufficient width and thickness of copper, for example 35 μm, sockets 4 of the electrical connector are soldered to the said tracks in such a way that their location corresponds to the location of the corresponding plugs of the sockets 2. If all the plugs of the sockets 2 are simultaneously inserted into the sockets 4, then each socket 2 will be properly connected to the phase, neutral and ground, ensuring the operability of the PDU.In this case, the distance from the top surface of the front panel 1 to the bottom of the protruding terminals of the sockets 4 from the board 3 will be smaller than the distance from the top surface of the front panel 1 to the bottom of a conventional wired socket. Thus, the technical result of this utility model is achieved: a reduction in the dimensions of the power supply unit.

[0024] It should be noted that not all plugs on all PDU sockets can be connected to the PCB receptacles. For example, only type C13 plugs can be connected, while wires can be soldered to the plugs on type C19 sockets.

[0025] To connect printed circuit board tracks to the power input circuits, you can use plated-through holes formed on the board and placed on the track. The phase, neutral, and protective ground of the jumper can be connected using a wire with a ring lug, such as the Pro Legend PL2983 (https: / / www.vseinstramenti.ru / productynakonechnik-koltsevoj-neizolirovannyj-pro-legend-l-0-l-5-mm2-latun-pl2983-21358196 / ), connected to the plated-through hole using a self-tapping screw or a screw and nut. Instead of a metallized hole, you can use a nut soldered onto the track, for example, SMTSO-M2-2ET (https: / / www.chipdip.ru / product / smtso-m2-2et-pem-8009249479).

[0026] Instead of an electrical contact containing a hole (a plated hole on the board or a soldered nut), you can use special clamping contacts for soldering to the board, for example, 2061-601 / 998-404 (https: / / www.chipdip.ru / product / 2061-601-998-404-wire-to-board-terminal-block-l-ways-wago-8967386665).

[0027] Some power distribution units (PDUs) use so-called controlled outlets, where the neutral or live wire of the outlet is connected to the corresponding circuit via a relay. In this case, such controlled outlets are not connected to the common busbar, but rather to the relay terminal. This can also be achieved by providing a track on the printed circuit board (PCB) for this outlet with a plated hole or nut, and then connecting it to the relay via a wire. In some cases, these electrical contacts, containing holes, can be connected to the neutral or live circuit by a track on the PCB. When connecting the outlet to the relay, the track(s) connecting the outlet to other outlets can be mechanically interrupted by milling or sawing the PCB area. This achieves an additional technical advantage: the same type of PCB can be used for both controlled and uncontrolled outlets.

[0028] Instead of printed circuit board traces, a copper wire wrapped in a loop around a screw with a press washer, which is screwed into a plated hole or nut on the connector side, can be used as a power busbar. Instead of wire, 0.2 mm thick copper tape with holes for screws screwed into plated holes can be used.

[0029] It should be noted that an additional technical result of this utility model is the increased reliability of the power supply unit. Automated processes already standard in the production of standard electronics can be used to control the soldering quality of sockets 4 onto board 3: automatic optical inspection (AOI), X-ray, and electrical testing for sticking and dry joints. A connector crimped onto a wire is difficult to automatically control, which reduces the reliability of the power supply unit.

[0030] Although the present utility model is described with reference to specific embodiments of its implementation, it is clear to specialists that these illustrative examples, in which various modifications can be made, do not limit the scope of the utility model, which is determined only by the attached formula of the utility model.

Claims

1. A power distribution unit comprising a power input, two power sockets, each of which has three plugs capable of being connected to a socket of an electrical connector and located inside the housing of said power distribution unit, characterized in that it comprises a printed circuit board with sockets of a power connector soldered to said printed circuit board, into which each of said plugs is inserted.

2. A power distribution unit according to claim 1, characterized in that said sockets may be of type C13 or C19 of the IEC 60320 standard.

3. A power distribution unit according to paragraph 1, characterized in that said plugs and said sockets are of the FASTON type with a contact width of 4.8 mm or 6.3 mm.

4. A power distribution unit according to paragraph 1, characterized in that said printed circuit board has a track to which a portion of said sockets is soldered, connected to a protective grounding electrical circuit connected to the protective grounding of said power supply input.

5. A power distribution unit according to paragraph 1, characterized in that said printed circuit board has a track to which a portion of said sockets is soldered, connected to the neutral electrical circuit connected to the neutral of said power supply input.

6. A power distribution unit according to claim 1, characterized in that said printed circuit board has a track to which a portion of said sockets is soldered, connected to the electrical circuit of a phase connected to the phase of said power supply input.

7. A power distribution unit according to claim 1, characterized in that said printed circuit board contains an electrical contact containing an opening that is electrically connected to at least one of said sockets.

8. A power distribution unit according to claim 7, characterized in that said electrical contact containing an opening is a metallized opening or a nut soldered to said printed circuit board.

9. A power distribution unit according to claim 1, characterized in that next to each of at least some of the sockets electrically connected to the neutral or phase track, there is an electrical contact containing an opening electrically connected to the same electrical circuit as the said adjacent socket.

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