Uninterruptible power supply device

Abstract

To suppress temperature rise in a first accommodation panel.SOLUTION: An uninterruptible power supply device 10 comprises: a first accommodation panel 20 for accommodating a first electrical component 70; and a second accommodation panel 100 for accommodating a second electrical component 150 different from the first electrical component. The second electrical component 150 is a power converter for converting power. The second accommodation panel 100 is disposed on a side surface of the first accommodation panel 20.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to an uninterruptible power supply. [Background technology]

[0002] An uninterruptible power supply is a device that supplies power to a load without power interruption, and includes a storage battery, a circuit board, a power converter, etc. Patent Document 1 is an example of a document that discloses technology related to uninterruptible power supplies. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-151052 Summary of the Invention [Problem to be solved by the invention]

[0004] When a power converter is housed in a battery panel, the heat generated by the power converter can cause the temperature of the battery panel to rise. This temperature rise in the battery panel can cause the batteries to deteriorate, raising concerns about the impact on product life. Other issues include the need for a cooling function to prevent the temperature rise in the battery panel. Similar issues arise when the power converter is housed in another panel, such as a control panel, rather than just in a battery panel. An object of the present invention is to suppress a temperature rise in the first housing panel due to heat generation by the power converter. [Means for solving the problem]

[0005] The uninterruptible power supply comprises a first housing panel that houses a first electrical component and a second housing panel that houses a second electrical component different from the first electrical component, the second electrical component being a power converter that converts power, and the second housing panel is arranged on a side of the first housing panel. [Effects of the Invention]

[0006] The present invention can suppress a temperature rise in the first housing panel due to heat generation by the power converter. [Brief explanation of the drawings]

[0007] [Figure 1] Front view of uninterruptible power supply [Figure 2] Figure showing the state where the front wall of the battery panel has been removed from Figure 1 [Figure 3] Enlarged view of the input / output unit [Figure 4] A perspective view showing the internal structure of the parallel unit [Figure 5] Perspective view of the uninterruptible power supply (front wall of the battery panel and top panel of the power conversion panel are omitted) [Figure 6] Uninterruptible Power Supply Circuit Diagram [Figure 7] Exploded perspective view of the power conversion panel [Figure 8] Perspective view of the stand [Figure 9] Rear perspective view of the stand [Figure 10] Exploded perspective view of a power converter [Figure 11] Rear perspective view of the power converter [Figure 12] Diagram showing electrical cable routing DETAILED DESCRIPTION OF THE INVENTION

[0008] (Outline of this embodiment) (1) An uninterruptible power supply according to one embodiment of the present invention includes a first housing panel that houses a first electric component and a second housing panel that houses a second electric component different from the first electric component, the second electric component being a power converter that converts electric power, and the second housing panel is disposed on a side of the first housing panel. The first housing panel may be, for example, a battery panel that houses a storage battery (an example of the first electric component) or a control panel that houses a circuit board (an example of the first electric component). The first housing panel may also house multiple electric components, such as a storage battery and a circuit board.

[0009] An uninterruptible power supply according to one embodiment of the present invention has a second housing panel that houses a power converter, which is a second electrical component, separate from a first housing panel that houses a first electrical component, with the power converter separated from the first housing panel. This makes it difficult for heat from the power converter to be transferred to the first housing panel, thereby suppressing temperature increases in the first housing panel. Furthermore, because the second housing panel is arranged alongside the first housing panel, it saves space and allows for shorter wiring to the first housing panel.

[0010] (2) In the uninterruptible power supply described in (1) above, the second housing panel may have a housing that houses the second electrical component, and the power converters may be electrically connected to the battery panel by wiring in a lower part of the housing. This configuration allows wiring to be performed by utilizing the empty space in the lower part of the housing. In addition, by passing the wiring through the lower part of the housing, it is difficult to reach the wiring from the outside.

[0011] (3) In the uninterruptible power supply according to (1) or (2), the second housing panel may have a housing for housing the second electric component, and the housing may have a base for supporting the plurality of power converters. This configuration supports the power conversion equipment using the base, eliminating the need to support the power converters using the first housing panel. This allows the strength of the first housing panel to be reduced, simplifying the structure of the first housing panel.

[0012] (4) In the uninterruptible power supply according to (2) or (3), the chassis support may support the plurality of power converters arranged at the same height, with the top and bottom surfaces of the converters aligned at the same height, and the plurality of power converters may have connectors on their bottom surfaces. This configuration, in which the connectors are provided on the bottom surfaces of the power converters, makes it easy to pull out the wiring downward and is suitable for wiring at the bottom of the chassis. Furthermore, because the bottom surfaces of the power converters on which the connectors are installed are aligned at the same height, cables of the same length can be used for wiring to the first housing panel. Using cables of the same length reduces the likelihood of differences in electrical characteristics and reduces the likelihood of wiring errors.

[0013] (5) In the uninterruptible power supply described in (4) above, the mount may support the power converter at a height where the connector is spaced apart from the ground. This configuration can prevent raindrops or water droplets from adhering to the connector, thereby suppressing short circuits and deterioration of the connector connection.

[0014] <Embodiment> 1. Overall configuration of uninterruptible power supply 10 This embodiment shows an outdoor-installed uninterruptible power supply 10 for continuous commercial use. Figure 1 is a front view of the uninterruptible power supply 10. In the following description, the left-right direction in Figure 1 is referred to as the X direction, the up-down direction as the Y direction, and the direction perpendicular to the paper surface as the Z direction. The Z direction is the front-to-rear direction of the battery panel 20, and in this embodiment, the opening side (the front right side in Figure 5) is referred to as the front side, and the opposite side (the rear left side in Figure 5) is referred to as the rear side.

[0015] 1 and 2, uninterruptible power supply 10 includes a support base 15 and a battery panel 20 installed on the upper surface of support base 15. Battery panel 20 includes an input / output unit 30, a parallel unit 40, a plurality of storage battery units 70A-70G, and a first housing 80 that houses these. Storage battery units 70A-70G, input / output unit 30, and parallel unit 40 are an example of a "first electrical component" of the present invention, and the battery panel is an example of a "first housing panel" of the present invention.

[0016] The first housing 80 is made of, for example, metal. The first housing 80 is box-shaped and long in the Y direction (vertical direction), and has a front wall 81, left and right side walls 82 and 83, a rear wall 84, a ceiling wall 85, and a bottom wall 86. The front wall 81 is a door that can be opened and closed via a hinge.

[0017] The input / output unit 30, parallel unit 40, and storage battery unit 70 are box-shaped and large enough to be housed in a first housing 80, which houses the input / output unit 30, parallel unit 40, and multiple (seven in this example) storage battery units 70A-70G in this order from the bottom up. The storage battery units 70A-70G are formed by housing multiple storage batteries in a casing made of metal or the like, or by holding them on a base or the like, thereby forming them into a unit.

[0018] 3, the input / output unit 30 is for inputting and outputting and blocking the input / output, and has an input terminal 31 for AC input, an output terminal 32 for AC output, multiple breakers 35, a lightning arrester 36, and a casing 38 made of metal or the like to accommodate these. The input terminal 31 is a terminal connected to the power system, and the output terminal 32 is a terminal for outputting to a load.

[0019] Furthermore, a space for accommodating a transformer 25 is provided below the input / output unit 30 in the battery panel 20 .

[0020] 4 is a perspective view showing the internal structure of the parallel unit 40. The parallel unit 40 includes a circuit board 45, such as a parallel board, that switches AC output, a base 47 that supports the circuit board 45, and a casing 50, such as made of metal, that houses these components.

[0021] 5, the uninterruptible power supply 10 includes a power conversion panel 100 in addition to the battery panel 20. The power conversion panel 100 has a second housing 110 and a plurality of power converters 150 housed in the second housing 110, and is disposed on the lower side of the battery panel 20. In this embodiment, the battery panel 20 housing five power converters 150A to 150E is disposed on the lower part of the left side wall 82 of the battery panel 20.

[0022] 2. Circuit configuration of uninterruptible power supply 10 6 is a block diagram of the uninterruptible power supply 10. The uninterruptible power supply 10 includes, as its electrical configuration, an input / output unit 30, a parallel unit 40, a plurality of storage battery units 70 (a collective term for 70A to 70G), and a power conversion panel 100.

[0023] The input / output unit 30 has an input terminal 31, an output terminal 32, and a plurality of breakers 35A to 35E. The parallel unit 40 includes a parallel board 45 having a first relay 41 and a second relay .

[0024] The input terminal 31 is connected to one end (the left end in FIG. 6) of a first relay 41 via a first breaker 35A. The output terminal 32 is connected to the other end (the right end in FIG. 6) of the first relay 41 via a second breaker 35B.

[0025] The other end (the right end in FIG. 6) of the second relay 42 is connected to the other end (the right end in FIG. 6) of the first relay 41. One end (the left end in FIG. 6) of the second relay 42 is connected to the power conversion panel 100. The power conversion panel 100 includes five power converters 150A to 150E connected in parallel.

[0026] Furthermore, seven storage battery units 70A to 70G are connected in parallel to the power conversion panel 100 via a third breaker 35C.

[0027] 6 shows only three of the power converters, 150A to 150C, and omits two, 150D and 150E, and only three of the storage battery units, 70A to 70C, and omits 70D to 70G.

[0028] Furthermore, a lightning arrester 36 is installed in the input / output unit 30. The lightning arrester 36 is installed between the input terminal 31 and the common terminal 33 via a fourth breaker 35D, and serves to protect the uninterruptible power supply 10 from surges caused by lightning strikes and the like.

[0029] Under normal circumstances (when there is no abnormality in the power grid), power can be supplied from the power grid to the load by selecting the first path L1 that passes through the first relay 41. During a power outage, power can be supplied from the storage battery unit 70 to the load by switching from the first path L1 that passes through the first relay 41 to the second path L2 that passes through the second relay 42.

[0030] 6, the third path L3 connects points A and B on the first path L1, bypassing the first breaker 35A, the parallel unit 40, and the second breaker 35B, and connecting the input terminal 31 and the output terminal 32. A fifth breaker 35E is provided on the third path L3.

[0031] The second breaker 35B and the fifth breaker 35E have a mechanical interlock, so that when one of the breakers 35B and 35E is closed, the other breaker 35B and 35E is not closed.

[0032] 3. Power conversion panel and its surrounding structure 7 to 9, the power conversion panel 100 includes a second housing 110 and a plurality of power converters 150. The power converters 150 are an example of a "second electric component" of the present invention, and the power conversion panel 100 is an example of a "second housing panel" of the present invention. The second housing 110 is composed of a base 120 made of metal or the like, and four panels 140A to 140D.

[0033] The mount 120 is used to fix the power converter 150, and includes a base frame 121, mounting bases 127 and 128, and brackets 131 and 132, as shown in FIG.

[0034] The base frame 121 is formed by joining a first frame 122 having a frame shape with four sides 122A to 122D and a second frame 123 having a frame shape with four sides 123A to 123D in an L-shape.

[0035] The base frame 121 also has reinforcing frames 125 and 126. The reinforcing frames 125 and 126 are provided at the front and rear of the base frame 121, and connect the bottom of the first frame 122 and the tip of the second frame 123 together.

[0036] The mounting bases 127 and 128 are plate-shaped and long in the Z direction (front-rear direction), and are installed above and below the first frame 122.

[0037] The brackets 131 and 132 are L-shaped and are respectively arranged relative to the upper and lower mounting bases 127 and 128. The upper and lower brackets 131 and 132 form a pair and are arranged at equal intervals in the Z direction (front-rear direction).

[0038] As shown in FIGS. 8 and 9, a plurality of power converters 150A to 150E can be attached to the frame 120 in the Z direction (front-rear direction) by bolting to the upper and lower brackets 131 and 132.

[0039] Specifically, the power converters 150A to 150E can be supported in a line at the same height so that the heights of their upper and lower surfaces are aligned. In Figures 8 and 12, H1 indicates the height of the upper surface of the power converters 150A to 150E, and H2 indicates the height of the lower surface of the power converters 150A to 150E.

[0040] The four panels 140A to 140D are made of, for example, metal. As shown in Fig. 7, the four panels 140A to 140D correspond to the front, rear, left side, and top of the power converter 150 fixed to the mount 120, respectively, and are fixed to the mount 120. Ventilation holes 145 are formed in the four panels 140A to 140D to improve the breathability of the power conversion panel 100 and prevent heat from building up inside the panel.

[0041] 10 is an exploded perspective view showing the internal structure of the power converter 150. The power converter 150 includes a power conversion board 151 that converts DC power into AC power, a box-shaped housing case 153 that houses the power conversion board 151, and a lid member 170.

[0042] The storage case 153 includes a base wall 154 and four outer peripheral walls 155A to 155D that surround the periphery of the base wall 154. As shown in Fig. 11, a heat sink 156 for heat dissipation is provided on the rear surface of the storage case 153 (the rear surface of the base wall 154), and is structured to dissipate heat generated by the power conversion board 151.

[0043] 11, five wiring connectors 160 are provided on outer peripheral wall 155D (the bottom wall located on the lower side when attached) of accommodating case 153. The five connectors 160A to 160E are waterproof connectors. Of the five connectors 160A to 160E, 160A and 160B are for AC input and AC output, 160C is for communication, 160D is for alarm output, and 160E is for DC input.

[0044] Flanges 157A to 157C are provided on bottom wall 155D of casing 153 so as to surround five connectors 160.

[0045] The flanges 157A to 157C serve to prevent raindrops running down the outer surface of the power converter 150 from getting around the bottom wall 155D of the power converter 150 and adhering to the connector 160.

[0046] Furthermore, mount 120 supports power converters 150A-150E at a height that positions connector 160 at a predetermined distance from the ground surface. This can prevent raindrops from bouncing off and adhering to connector 160 and its surroundings.

[0047] As described above, the uninterruptible power supply 10 has a structure in which the connector 160 is arranged on the bottom wall 155D of the power converter 150, and therefore, as shown in FIG. 12, the power converter 150 housed in the second housing 110 can be electrically connected to the battery panel 20 via wiring (electrical cables K1, K2) at the bottom of the second housing.

[0048] Specifically, as shown in Figures 3 and 5, a plurality of through holes 86A for wiring are provided in the bottom wall 86 of the battery panel 20, and the electric cables K1 and K2 can be drawn into the battery panel 20 through the through holes 86A.

[0049] The DC electric cable K1 is connected to the input / output unit 30 in the battery panel 20, and the AC electric cable K2 is connected to the parallel unit 40 in the battery panel 20.

[0050] It is preferable that the DC electric cables K1 be of the same length in each of the power converters 150A to 150E. Similarly, it is preferable that the AC electric cables K2 be of the same length. By using cables of the same length, differences in electrical characteristics are less likely to occur and wiring work errors are less likely to occur.

[0051] 4.Effectiveness According to an uninterruptible power supply 10 of one embodiment of the present invention, a power conversion panel 100 is provided in addition to the battery panel 20, and the power converter 150 is separated from the battery panel 20, so that heat from the power converter 150 is less likely to be transmitted to the storage battery and circuit board built into the battery panel 20.

[0052] This makes it possible to prevent the temperature of the storage battery and circuit board from rising, which in turn extends the product life and contributes to solving environmental issues.

[0053] Furthermore, since the power conversion panel 100 is arranged alongside the battery panel 20, it is possible to save space and shorten the electrical cables K1 and K2 for wiring.

[0054] Furthermore, the power converter 150 is electrically connected to the battery panel 20 by wiring at the bottom of the second housing. In this configuration, the wiring (electric cables K1, K2) passes through the bottom of the second housing 110, making it difficult for hands to touch the wiring from the outside.

[0055] <Other embodiments> The present invention is not limited to the embodiments described above and illustrated in the drawings, and the following embodiments, for example, are also included within the technical scope of the present invention.

[0056] (1) In the above embodiment, the uninterruptible power supply 10 is for outdoor use, but it may also be for indoor use.

[0057] (2) In the above embodiment, the power conversion panel 100 is disposed on the left side of the battery panel 20, but it may also be disposed on the right side or rear side.

[0058] (3) In the above embodiment, the input / output unit 30, the parallel unit 40, and the storage battery unit 70 are accommodated in the battery panel 20. However, the battery panel 20 may be configured to accommodate only the storage battery unit 70, and the power conversion panel 100 may be placed on the side of the battery panel 20. Furthermore, the input / output unit 30 and the parallel unit 40 may be mounted on a separate panel separate from the battery panel 20, with the power conversion panel 100 disposed on the side of the panel to protect the input / output unit 30 and the parallel unit 40 from the heat of the power converter 150. The techniques disclosed in this specification are not limited to uninterruptible power supplies, but can be widely applied to any electrical equipment that uses a power converter such as an inverter or converter.

[0059] (4) In the above embodiment, the connector 160 is disposed on the bottom wall 155D of the power converter 150, but the connector 160 may be disposed in a location other than the bottom wall 155D. In addition, the wiring path is not limited to the lower part of the battery panel 20 and the power conversion panel 100, and may be in another location. [Explanation of symbols]

[0060] 10 Uninterruptible power supply 20 Battery panel (first storage panel) 30 Input / output unit (first electrical component) 40 Parallel unit (first electrical component) 70A~70G Storage Battery Unit (First Electrical Component) 80 1st cabinet 100 Power conversion panel (second housing panel) 110 Second cabinet 120 Mounting stand 150A~150E Power converter (second electrical component)

Claims

1. An uninterruptible power supply, a first housing board that houses a first electric component; a second housing board that houses a second electric component different from the first electric component, the second electric component is a power converter that converts electric power; The second housing board is arranged on a side surface of the first housing board.

2. 2. The uninterruptible power supply according to claim 1, the second housing board has a housing that houses the second electric component, The plurality of power converters are electrically connected to the first housing panel by wiring in the lower part of the housing.

3. 3. The uninterruptible power supply according to claim 1 or 2, the second housing board has a housing that houses the second electric component, The uninterruptible power supply, wherein the housing has a base that supports a plurality of the power converters.

4. 4. The uninterruptible power supply according to claim 3, the housing base supports the plurality of power converters in a state where they are lined up at the same height so that the heights of their upper and lower surfaces are aligned, The uninterruptible power supply, wherein the plurality of power converters have connectors on the bottom surface.

5. 5. The uninterruptible power supply according to claim 4, The uninterruptible power supply device, wherein the mounting base supports the power converter at a height position where the connector is spaced apart from the ground surface.

6. 3. The uninterruptible power supply according to claim 1 or 2, The uninterruptible power supply, wherein the first housing board is a battery board that houses a storage battery, which is the first electrical component.

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