Uninterruptible power supply distribution box

Abstract

The utility model provides an uninterruptible power supply distribution box, a UPS power supply and a plurality of contactors are arranged in the distribution box, a contactor KM2 and a contactor KM7 are connected in series, the input end of the contactor KM2 is connected with the power supply input end of the distribution box, and the output end of the contactor KM7 is connected with the input end of the UPS power supply; the contactor KM9 and the contactor KM10 are connected in parallel, the input end of the contactor KM9 is connected with the output end of the contactor KM2, and the output end of the contactor KM9 is connected with the input end of the contactor KM11; the contactor KM10 and the contactor KM11 are connected in series, the input end of the contactor KM10 is connected with the output end of the UPS power supply, and the output end of the contactor KM11 is connected with the power supply input end of the cabinet. According to the utility model, when the UPS is on-line and has no abnormity, the power supply of the cabinet is not influenced no matter whether the distribution box is abnormal or not; and when the UPS is abnormal, the bypass mode of the distribution box can be switched, so that the reliability of power supply is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of power supply equipment, in particular to an uninterruptible power supply distribution box. Background Art

[0002] In the communication control of special vehicles, the uninterrupted power supply of important equipment is one of the important issues that need to be considered in product design. The overall unit has high requirements for the reliability and uninterrupted power supply of the distribution box.

[0003] The current AC output distribution box cannot complete the power distribution work for the UPS output when the distribution box is abnormal. As a result, even if the UPS is normal, the output cannot supply power to the outside normally, affecting the smooth execution of combat missions.

[0004] It can be seen that it is crucial to study a reliable and uninterrupted power supply distribution box to avoid special vehicles being affected by abnormal power failure of the distribution box. Utility Model Content

[0005] The technical problem to be solved by the utility model is how to provide a distribution box with uninterrupted power supply.

[0006] In order to solve the above technical problems, the utility model provides an uninterruptible power supply distribution box, which is used to supply power to the cabinet. The power input end of the distribution box is connected to the mains. A UPS power supply and multiple contactors are arranged in the distribution box, wherein:

[0007] The contactor KM2 is connected in series with the contactor KM7, the input end of the contactor KM2 is connected to the power input end of the distribution box, and the output end of the contactor KM7 is connected to the input end of the UPS power supply;

[0008] The contactor KM9 is connected in parallel with the contactor KM10, the input end of the contactor KM9 is connected to the output end of the contactor KM2, and the output end of the contactor KM9 is connected to the input end of the contactor KM11;

[0009] The contactor KM10 is connected in series with the contactor KM11. The input end of the contactor KM10 is connected to the output end of the UPS power supply, and the output end of the contactor KM11 is connected to the power input end of the cabinet.

[0010] Furthermore, when the contactors KM2, KM7 and KM9 are disconnected and the contactors KM10 and KM11 are energized, the output end of the UPS power supply is connected to the power input end of the cabinet.

[0011] Furthermore, when the contactor KM2 and contactor KM7 are energized and the contactor KM9 is disconnected, and the contactor KM10 and contactor KM11 are energized, the power output end of the distribution box is connected to the input end of the UPS power supply, and the output end of the UPS power supply is connected to the power input end of the cabinet.

[0012] Furthermore, when the contactors KM2, KM9 and KM11 are energized and the contactors KM7 and KM10 are disconnected, the power output terminal of the distribution box is connected to the power input terminal of the cabinet.

[0013] Furthermore, a first voltage sampling module and a second voltage sampling module are also provided in the distribution box. The first voltage sampling module is connected in parallel with the contactor KM7, and the second voltage sampling module is connected in parallel with the contactor KM11.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model uses the UPS power supply and multiple contactors to ensure that when the UPS power supply is online and there is no abnormality, whether the distribution box is abnormal or not, the power supply of the cabinet is not affected; when the UPS power supply is abnormal, it can switch to the bypass mode of the distribution box, ensuring the reliability of power supply and having the flexibility to deal with sudden abnormal situations. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a circuit schematic diagram of the utility model. DETAILED DESCRIPTION

[0017] In order to make the technical scheme and technical effect of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments.

[0018] like Figure 1 As shown, the utility model aims to provide an uninterruptible power supply distribution box, the distribution box is connected to a left cabinet and a right cabinet (the left cabinet and the right cabinet do not work at the same time), and the power input end of the distribution box is connected to the AC220V mains.

[0019] The distribution box is provided with a UPS power supply and a plurality of contactors KM2, KM7, KM9, KM10, and KM11. Contactor KM2 is connected in series with contactor KM7, the input end of contactor KM2 is connected to the power input end of the distribution box, and the output end of contactor KM7 is connected to the input end of the UPS power supply; contactor KM9 is connected in parallel with contactor KM10, the input end of contactor KM9 is connected to the output end of contactor KM2, and the output end of contactor KM9 is connected to the input end of contactor KM11; contactor KM10 is connected in series with contactor KM11, the input end of contactor KM10 is connected to the output end of the UPS power supply, and the output end of contactor KM11 is connected to the power input end of the cabinet.

[0020] A first voltage sampling module and a second voltage sampling module are also provided in the distribution box. The first voltage sampling module is connected in parallel with the contactor KM7, and the second voltage sampling module is connected in parallel with the contactor KM11.

[0021] The following is an analysis of various working conditions

[0022] 1. UPS power online mode

[0023] 1. The distribution box is not powered on, and the UPS power supply is supplying power to the cabinet

[0024] Contactor KM2, contactor KM7, and contactor KM9 are disconnected, and contactor KM10 and contactor KM11 are closed. At this time, the output end of the UPS power supply is connected to the power input end of the cabinet.

[0025] 2. The distribution box is powered on, the distribution box charges the UPS power supply, and the UPS power supply supplies power to the cabinet

[0026] When contactor KM2 and contactor KM7 are energized, contactor KM9 is disconnected, and contactor KM10 and contactor KM11 are energized, the power output end of the distribution box is connected to the input end of the UPS power supply, and the output end of the UPS power supply is connected to the power input end of the cabinet.

[0027] 2. UPS power bypass mode

[0028] 1. The distribution box is powered on to supply power to the cabinet, and the UPS power supply is disconnected.

[0029] When contactor KM2, contactor KM9, and contactor KM11 are energized, and contactor KM7 and contactor KM10 are disconnected, the power output terminal of the distribution box is connected to the power input terminal of the cabinet.

[0030] In summary, when powering on: first turn on the UPS power supply, then turn on the power output switch of the distribution box, and then turn on the main power switch; when powering off: first turn off the power switches of each device in the cabinet, then turn off the main power switch, then turn off the power output switch of the distribution box, and finally turn off the UPS power supply.

[0031] The utility model realizes that when the UPS power supply is online and there is no abnormality, whether the distribution box is abnormal or not, the power supply of the cabinet is not affected by the abnormality through the setting of the UPS power supply and multiple contactors; when the UPS power supply is abnormal, it can switch to the bypass mode of the distribution box, thus ensuring the reliability of power supply and having the flexibility to deal with sudden abnormal situations.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An uninterruptible power supply distribution box, the distribution box is used to supply power to a cabinet, the power input end of the distribution box is connected to the mains, characterized in that: The distribution box is provided with a UPS power supply and a plurality of contactors (KM2, KM7, KM9, KM10, KM11), wherein: The contactor KM2 is connected in series with the contactor KM7, the input end of the contactor KM2 is connected to the power input end of the distribution box, and the output end of the contactor KM7 is connected to the input end of the UPS power supply; The contactor KM9 is connected in parallel with the contactor KM10, the input end of the contactor KM9 is connected to the output end of the contactor KM2, and the output end of the contactor KM9 is connected to the input end of the contactor KM11; The contactor KM10 is connected in series with the contactor KM11. The input end of the contactor KM10 is connected to the output end of the UPS power supply, and the output end of the contactor KM11 is connected to the power input end of the cabinet.

2. The uninterruptible power supply distribution box according to claim 1, characterized in that: When the contactors KM2, KM7 and KM9 are disconnected and the contactors KM10 and KM11 are closed, the output end of the UPS power supply is connected to the power input end of the cabinet.

3. The uninterruptible power supply distribution box according to claim 1, characterized in that: When the contactor KM2 and contactor KM7 are energized and the contactor KM9 is disconnected, and the contactor KM10 and contactor KM11 are energized, the power output end of the distribution box is connected to the input end of the UPS power supply, and the output end of the UPS power supply is connected to the power input end of the cabinet.

4. The uninterruptible power supply distribution box according to claim 1, characterized in that: When the contactors KM2, KM9 and KM11 are energized and the contactors KM7 and KM10 are disconnected, the power output terminal of the distribution box is connected to the power input terminal of the cabinet.

5. The uninterruptible power supply distribution box according to any one of claims 1 to 4, characterized in that: The distribution box is further provided with a first voltage sampling module and a second voltage sampling module. The first voltage sampling module is connected in parallel with the contactor KM7, and the second voltage sampling module is connected in parallel with the contactor KM11.

Images