Power distribution cabinet

Abstract

The utility model discloses a power distribution cabinet, which comprises a cabinet body and electrical equipment arranged in the cabinet body, one side of the electrical equipment close to the back of the cabinet body is provided with a first port, the power distribution cabinet also comprises at least two first copper bars arranged in the cabinet body, the first copper bars are connected with the first port, and the second copper bars are connected with the second port. The extension direction of the first copper bars is the direction from the back surface of the cabinet body to the front surface of the cabinet body, and the at least two first copper bars are sequentially arranged along the height direction of the cabinet body. According to the power distribution cabinet provided by the utility model, reasonable arrangement and design can be carried out on internal electrical elements more easily, so that electrical wiring of the power distribution cabinet is regular, and maintenance and wiring operation are easy.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage equipment, in particular to a power distribution cabinet. Background Art

[0002] The power distribution cabinet is a device used for power distribution. With the development and application of energy storage systems, the system function integration and power distribution requirements of the power distribution cabinet are increasing. In order to meet the above requirements, the electrical components inside the power distribution cabinet are becoming more and more complex, which leads to the disordered and unreasonable layout of the electrical wiring inside the existing power distribution cabinet. In addition, because the power distribution cabinet is set in the container, the door panel of the power distribution cabinet needs to be removed from the side or back for wiring or maintenance operations, which brings inconvenience to installation and after-sales. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a power distribution cabinet to solve the problems of disorderly electrical wiring inside the existing power distribution cabinet, unreasonable arrangement and inconvenient later maintenance.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a power distribution cabinet, comprising a cabinet body and an electrical device arranged in the cabinet body, wherein a first port is provided on a side of the electrical device close to the back of the cabinet body, and further comprising at least two first copper bars arranged in the cabinet body, wherein the first copper bars are connected to the first port, and an extension direction of the first copper bars is from the back of the cabinet body to the front of the cabinet body, and at least two first copper bars are arranged sequentially along the height direction of the cabinet body.

[0005] Furthermore, the lengths of at least two of the first copper bars are arranged to decrease in sequence downward along the height direction of the cabinet.

[0006] Furthermore, projections of two adjacent first copper bars in the horizontal direction are staggered with each other.

[0007] Furthermore, it includes at least two electrical devices and a second copper bar, at least two of the electrical devices are arranged in sequence along the height direction of the cabinet, the second copper bar extends along the height direction of the cabinet, and the second copper bar is respectively connected to the first ports of at least two of the electrical devices, so that at least two of the electrical devices are connected in parallel through the second copper bar, and at least two of the first copper bars are connected to the second copper bar.

[0008] Furthermore, it also includes a current sensor and at least two third copper bars. At least two second ports are provided on a side of the electrical equipment close to the front of the cabinet. At least two third copper bars are matched with at least two second ports one by one, and at least two third copper bars are connected to the current sensor.

[0009] Furthermore, the current sensor is arranged below the electrical equipment and close to the front of the cabinet.

[0010] Furthermore, the cabinet includes a bracket, and a partition is provided in the middle position in the length direction of the bracket to separate the bracket into a first area and a second area. The electrical equipment includes a circuit breaker and a plurality of parallel DC isolating switches, the circuit breaker is arranged in the first area, and the plurality of DC isolating switches are arranged in sequence along the height direction of the bracket.

[0011] Furthermore, it includes a first front door panel and a second front door panel, wherein the first front door panel and the second front door panel are both rotatably disposed on a side of the bracket close to the front of the cabinet, the first front door panel is disposed corresponding to the first area, and the second front door panel is disposed corresponding to the second area.

[0012] Furthermore, it also includes an operation panel, which is arranged on a side of the bracket close to the front side of the cabinet.

[0013] Furthermore, it also includes a first back door panel and a second back door panel, wherein the first back door panel and the second back door panel are both arranged on the side of the bracket close to the back of the cabinet, the first back door panel is arranged corresponding to the first area, and the second back door panel is arranged corresponding to the second area.

[0014] The beneficial effect of the utility model is that the power distribution cabinet provided by the utility model adopts the first copper bar to connect the port of the electrical equipment. Compared with the wire, the use of the first copper bar can make the electrical wiring in the power distribution cabinet more regular, avoid the problem of messy electrical wiring in the power distribution cabinet, and the first copper bar extends to a position close to the front of the cabinet, so that the operator can wire and maintain the electrical equipment on the front of the cabinet. Therefore, the power distribution cabinet provided by the utility model is easier to rationally arrange and design the internal electrical components, so that the electrical wiring of the power distribution cabinet is regular, easy to maintain and wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of a power distribution cabinet according to the utility model in an embodiment of the present invention, with the front door panel of the power distribution cabinet in a closed state;

[0016] Figure 2 for Figure 1 The structural diagram of the power distribution cabinet with the front door panel open is shown in FIG.

[0017] Figure 3 for Figure 1 The exploded diagram of the cabinet structure of the power distribution cabinet shown in;

[0018] Figure 4 for Figure 3 Enlarged view of part A in the middle;

[0019] Figure 5 for Figure 3 A schematic diagram of the structure of the bracket shown in one of the front views;

[0020] Figure 6 for Figure 3 A schematic diagram of the structure of the bracket shown in another front view;

[0021] Figure 7 for Figure 3 Schematic diagram of the structure of the bracket shown in the back view.

[0022] Description of labels:

[0023] 1. cabinet; 11. bracket; 111. partition; 112. first area; 113. second area; 12. first front door panel; 13. second front door panel; 14. operation panel; 15. first back door panel; 16. second back door panel; 17. side door panel;

[0024] 2. Electrical equipment; 21. DC isolating switch; 22. Circuit breaker;

[0025] 3. First copper bar; 31. Shunt copper bar; 32. Input copper bar;

[0026] 4. The second copper bar;

[0027] 5. Current sensor;

[0028] 6. The third copper bar;

[0029] 7. Cooling fan;

[0030] 8. Transformer;

[0031] 9. Photovoltaic controller. DETAILED DESCRIPTION

[0032] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0033] Please refer to Figures 1 to 7 The utility model provides a power distribution cabinet, comprising a cabinet 1 and an electrical device 2 arranged in the cabinet, wherein the electrical device 2 is provided with a first port on a side close to the back of the cabinet 1, and further comprising at least two first copper bars 3 arranged in the cabinet, wherein the first copper bars 3 are connected to the first port, and the extension direction of the first copper bars 3 is from the back of the cabinet 1 to the front of the cabinet 1, and at least two first copper bars 3 are arranged in sequence along the height direction of the cabinet 1.

[0034] As can be seen from the above description, the beneficial effect of the utility model is that the power distribution cabinet provided by the utility model uses the first copper bar 3 to connect the port of the electrical device 2. Compared with the wire, the use of the first copper bar 3 can make the electrical wiring in the power distribution cabinet more regular, avoiding the problem of messy electrical wiring in the power distribution cabinet, and the first copper bar 3 extends to the position close to the front of the cabinet 1, so that the operator can wire and maintain the electrical equipment 2 at the front of the cabinet 1. Therefore, the power distribution cabinet provided by the utility model is easier to rationally arrange and design the internal electrical components, so that the electrical wiring of the power distribution cabinet is regular, easy to maintain and wire.

[0035] Furthermore, the lengths of at least two of the first copper bars 3 decrease downward in sequence along the height direction of the cabinet 1 .

[0036] Furthermore, the projections of two adjacent first copper bars 3 in the horizontal direction are staggered with each other.

[0037] From the above description, we can see that Figure 4 As shown, the projections of at least two first copper bars 3 in the horizontal direction are arranged in a stepped manner, and at least two shunt copper bars 31 are arranged in a form of being long at the top and short at the bottom, low at the front and high at the back, which can ensure that there is sufficient space when the first copper bars 3 arranged in sequence along the height direction of the cabinet 1 are connected to the wiring harness, especially the two adjacent shunt copper bars 31 will not interfere with each other when wiring. Therefore, the spatial arrangement of the first copper bars 3 of the power distribution cabinet described in the utility model is reasonable, and the wiring operation is faster and more convenient.

[0038] Furthermore, it includes at least two electrical devices 2 and a second copper busbar 4, at least two of the electrical devices 2 are arranged in sequence along the height direction of the cabinet 1, the second copper busbar 4 extends along the height direction of the cabinet 1, and the second copper busbar 4 is respectively connected to the first ports of at least two of the electrical devices 2, so that at least two of the electrical devices 2 are connected in parallel through the second copper busbar 4, and at least two of the first copper busbars 3 are connected to the second copper busbar 4.

[0039] From the above description, it can be seen that when multiple electrical devices 2 need to be connected in parallel, a second copper busbar 4 can be set, which is not only beneficial to the regular design of electrical wiring in the distribution cabinet, but also beneficial to improving the structural integration of the electrical equipment 2, thereby meeting the development trend of miniaturization of distribution cabinets.

[0040] Furthermore, it also includes a current sensor 5 and at least two third copper bars 6. The electrical equipment 2 is provided with at least two second ports on a side close to the front of the cabinet 1. At least two of the third copper bars 6 are matched with at least two of the second ports one by one, and at least two of the third copper bars 6 are connected to the current sensor 5.

[0041] It can be seen from the above description that, through the design of the first copper bar 3 , the second copper bar 4 and the third copper bar 6 , the wiring operations of the power distribution cabinet can be completed on the front side of the cabinet body 1 .

[0042] Furthermore, the current sensor 5 is disposed below the electrical device 2 and close to the front of the cabinet 1 .

[0043] It can be seen from the above description that such a structural design can shorten the length of the third copper busbar 6 .

[0044] Furthermore, the cabinet 1 includes a bracket 11, and a partition 111 is provided in the middle position in the length direction of the bracket 11 to separate the bracket 11 into a first area 112 and a second area 113. The electrical equipment 2 includes a circuit breaker 22 and a plurality of parallel DC isolating switches 21. The circuit breaker 22 is arranged in the first area 112, and the plurality of DC isolating switches 21 are arranged in the second area 113. The plurality of DC isolating switches 21 are arranged in sequence along the height direction of the bracket 11.

[0045] From the above description, it can be seen that the isolating switch module and the circuit breaker 22 in the distribution cabinet are arranged along the horizontal direction of the cabinet body 1, which makes the electrical equipment 2 in the distribution cabinet arranged reasonably, makes it easier to improve the regularity of the wiring inside the distribution cabinet, and improves the convenience of wiring and maintenance operations of the distribution cabinet.

[0046] Furthermore, it includes a first front door panel 12 and a second front door panel 13. The first front door panel 12 and the second front door panel 13 are both rotatably arranged on the side of the bracket 11 close to the front of the cabinet 1. The first front door panel 12 is arranged corresponding to the first area 112, and the second front door panel 13 is arranged corresponding to the second area 113.

[0047] It can be seen from the above description that in daily use, the wiring and maintenance operations of the power distribution cabinet can be carried out by opening the first front door panel 12 and the second front door panel 13, and the wiring and maintenance operations of the power distribution cabinet are more convenient and quick.

[0048] Furthermore, it also includes an operation panel 14 , which is arranged on a side of the bracket 11 close to the front side of the cabinet 1 .

[0049] It can be seen from the above description that the operation panel 14 can shield the electrical equipment 2 and electrical wiring in the power distribution cabinet, thereby improving the safety performance of the operator in debugging the power distribution cabinet.

[0050] Furthermore, it also includes a first back door panel 15 and a second back door panel 16. The first back door panel 15 and the second back door panel 16 are both arranged on the side of the bracket 11 close to the back of the cabinet 1. The first back door panel 15 is arranged corresponding to the first area 112, and the second back door panel 16 is arranged corresponding to the second area 113.

[0051] Embodiment 1

[0052] Please refer to Figures 1 to 7 Embodiment 1 of the present invention provides a power distribution cabinet, which includes a cabinet body 1, an electrical device 2 arranged in the cabinet body 1, and at least two first copper bars 3 arranged in the cabinet body 1.

[0053] Please refer to Figures 1 to 3 In this embodiment, the cabinet 1 includes a bracket 11, a first front door panel 12, a second front door panel 13, a first back door panel 15 and a second back door panel 16. In order to facilitate the arrangement of the electrical equipment 2 in the cabinet 1, a partition 111 is provided in the middle position in the length direction of the bracket 11 to partition the bracket 11 into a first area 112 and a second area 113. The electrical equipment 2 includes a circuit breaker 22 and two parallel DC isolating switches 21. The circuit breaker 22 is arranged in the first area 112, and the two DC isolating switches 21 are arranged in the second area 113. The input ports of the two DC isolating switches 21 are respectively connected to two AC-DC power supplies, and the two DC isolating switches 21 are arranged in sequence along the height direction of the bracket 11.

[0054] Please refer to Figure 3 It is easy to see that the first front door panel 12 and the second front door panel 13 are both rotatably arranged on the side of the bracket 11 close to the front of the cabinet 1, the first front door panel 12 is arranged corresponding to the first area 112, and the second front door panel 13 is arranged corresponding to the second area 113, so that the front of the cabinet 1 forms a double-door structure, which is convenient for the cabinet 1 to be opened or closed; the first back door panel 15 and the second back door panel 16 are both arranged on the side of the bracket 11 close to the back of the cabinet 1, the first back door panel 15 is arranged corresponding to the first area 112, and the second back door panel 16 is arranged corresponding to the second area 113, and side door panels 17 are arranged on both sides of the width direction of the bracket 11. Each of the above-mentioned door panels is fixed to the bracket 11 with bolts, and the bolts can be removed to facilitate the maintenance or replacement of the electrical equipment 2 inside the cabinet 1.

[0055] There is no need to perform wiring operations when opening and closing the DC isolation switch 21 or adjusting other electrical equipment 2 by buttons on a daily basis. Therefore, in order to improve the operational safety of the distribution cabinet, in this embodiment, an operation panel 14 is arranged on the side of the bracket 11 close to the front of the cabinet body 1 to shield the electrical wiring of each electrical equipment 2 in the bracket 11.

[0056] In this embodiment, the at least two first copper bars 3 include at least two shunt copper bars 31 connected to the DC disconnector 21 and an input copper bar 32 connected to the circuit breaker 22 .

[0057] For details, please combine Figures 5 to 7 For reference, in this embodiment, the power distribution cabinet also includes a second copper bar 4, two DC isolating switches 21 are arranged in sequence along the height direction of the cabinet 1, the two DC isolating switches 21 are arranged at a lower position of the first area 112, the second copper bar 4 extends along the height direction of the cabinet 1, and the second copper bar 4 is respectively connected to the two DC isolating switches 21, so that the two DC isolating switches 21 are connected in parallel through the second copper bar 4, and at least two shunt copper bars 31 are connected to the second copper bar 4.

[0058] In detail, there are two second copper bars 4, and the two second copper bars 4 include a positive second copper bar and a negative second copper bar. The positive second copper bar is connected to the positive ports of the two DC isolating switches 21, respectively, and the negative second DC copper bar is connected to the negative ports of the two DC isolating switches 21, respectively. The positive port and the negative port are the first ports of the DC isolating switches 21. At least two shunt copper bars 31 include two positive shunt copper bars and two negative shunt copper bars. The two positive shunt copper bars are connected to the positive second copper bar, and the two negative shunt copper bars are connected to the negative second copper bar. Among them, the two positive shunt copper bars are connected to the positive pole of the converter and the positive pole of the electric cabinet, respectively, and the two negative shunt copper bars are connected to the negative pole of the converter and the negative pole of the electric cabinet, respectively.

[0059] Two positive shunt copper bars are arranged on one side of the first area 112 away from the partition 111. The extension direction of the positive shunt copper bars is from the back of the cabinet 1 to the front of the cabinet 1. That is to say, in this embodiment, the positive shunt copper bars extend along the width direction of the cabinet 1, and the two positive shunt copper bars are arranged in sequence along the height direction of the cabinet 1. The length of the positive shunt copper bars is arranged in descending order along the height direction of the cabinet 1, and the projections of the two positive shunt copper bars in the horizontal direction are staggered. Figure 4 As shown, the projections of the two positive shunt copper bars in the horizontal direction are arranged in a stepped manner. The two positive shunt copper bars are arranged in a design in which the upper part is long and the lower part is short, the front part is low and the back part is high. There is ample space when the two positive shunt copper bars are connected to the wiring harness and there is no interference with each other. Therefore, the spatial arrangement of the two positive shunt copper bars in this embodiment is reasonable, and the wiring operation is convenient and quick.

[0060] Two negative shunt copper bars are arranged on one side of the first area 112 close to the partition. The arrangement of the two negative shunt copper bars is the same as that of the two positive shunt copper bars, and the obtained effects are the same, which will not be repeated here.

[0061] In this embodiment, the circuit breaker 22 is arranged below the second area 113, and there are three input copper bars 32, including a first input copper bar 32, a second input copper bar 32 and a third input copper bar 32. Three input ports are provided on the circuit breaker 22, and the three input ports are the first ports of the circuit breaker 22. The three input copper bars 32 are respectively connected to three AC power sources.

[0062] Among them, the first input copper bar 32 and the second input copper bar 32 are both arranged on one side of the second area 113 close to the partition, and the arrangement direction of the first input copper bar 32 and the second input copper bar 32 is the same as the arrangement method of the two positive shunt copper bars, and the obtained effects are the same, which will not be repeated here; the third input copper bar 32 is arranged on one side of the second area 113 away from the partition 111, and the third input copper bar 32 extends from a position close to the back of the cabinet 1 to a position close to the front of the cabinet 1, that is, in this embodiment, the third input copper bar 32 extends along the width direction of the cabinet 1.

[0063] In this embodiment, three output ports are also provided on the side of the circuit breaker 22 close to the front of the cabinet 1, and the output port is the second port of the circuit breaker 22. The accessory cabinet also includes a current sensor 5 and at least three third copper bars 6, and the three third copper bars 6 are respectively connected to the three second ports, and the three third copper bars 6 are all connected to the current sensor 5, and the three third copper bars 6 are all used to output alternating current.

[0064] It should be understood that the electrical equipment in the power distribution cabinet of the present invention is not limited to the DC disconnectors and circuit breakers described in the above specific embodiments. The specific embodiments described only involve non-exhaustive enumeration. Those skilled in the art can make corresponding adjustments to the structure of the cabinet, the type of electrical equipment, the specific structure of the copper busbar, etc. according to actual conditions.

[0065] In this embodiment, two cooling fans 7 are provided on the top of the bracket 11 for air cooling. Specifically, the cooling fans 7 are bolted to the top of the bracket 11. If the cooling fans 7 need to be maintained, there is no need to dismantle the cabinet 1. Only the bolts of the cooling fans 7 need to be removed for replacement. The electrical equipment 2 of the power distribution cabinet also includes a transformer 8 and a photovoltaic controller 9. Both the transformer 8 and the photovoltaic controller 9 are key heat-generating electrical components. Therefore, the two are arranged on the top of the bracket 11, and an air duct is formed by enclosing various door panels to facilitate heat dissipation of the transformer 8 and the photovoltaic controller 9.

[0066] In summary, the power distribution cabinet provided by the utility model uses the first copper bar 3 to connect the port of the electrical device 2. Compared with the wire, the use of the first copper bar 3 can make the electrical wiring in the power distribution cabinet more regular, avoiding the problem of messy electrical wiring in the power distribution cabinet, and the first copper bar 3 extends to a position close to the front of the cabinet 1, so that the operator can wire and maintain the electrical equipment 2 at the front of the cabinet 1. Therefore, the power distribution cabinet provided by the utility model is easier to rationally arrange and design the internal electrical components, so that the electrical wiring of the power distribution cabinet is regular, easy to maintain and wire.

[0067] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A power distribution cabinet, comprising a cabinet body and an electrical device arranged in the cabinet body, wherein a first port is arranged on a side of the electrical device close to the back of the cabinet body, wherein: It also includes at least two first copper bars arranged in the cabinet, the first copper bars are connected to the first port, and the extension direction of the first copper bars is from the back side of the cabinet to the front side of the cabinet, and at least two first copper bars are arranged in sequence along the height direction of the cabinet.

2. The power distribution cabinet according to claim 1, characterized in that: The lengths of at least two of the first copper bars decrease successively downward along the height direction of the cabinet.

3. The power distribution cabinet according to claim 1, characterized in that: The projections of two adjacent first copper bars in the horizontal direction are staggered with each other.

4. The power distribution cabinet according to claim 1, characterized in that: The cabinet comprises at least two electrical devices and a second copper bar, wherein the at least two electrical devices are arranged in sequence along the height direction of the cabinet, the second copper bar extends along the height direction of the cabinet, and the second copper bar is respectively connected to the first ports of at least two electrical devices so that at least two electrical devices are connected in parallel through the second copper bar, and at least two of the first copper bars are connected to the second copper bar.

5. The power distribution cabinet according to claim 1, characterized in that: It also includes a current sensor and at least two third copper bars. At least two second ports are provided on a side of the electrical equipment close to the front of the cabinet. At least two third copper bars are matched with at least two second ports in a one-to-one manner, and at least two third copper bars are connected to the current sensor.

6. The power distribution cabinet according to claim 5, characterized in that: The current sensor is arranged below the electrical equipment and close to the front of the cabinet.

7. The power distribution cabinet according to claim 1, characterized in that: The cabinet includes a bracket, and a partition is provided in the middle position in the length direction of the bracket to separate the bracket into a first area and a second area. The electrical equipment includes a circuit breaker and a plurality of parallel DC disconnectors, the circuit breaker is arranged in the first area, and the plurality of DC disconnectors are arranged in the second area, and the plurality of DC disconnectors are arranged in sequence along the height direction of the bracket.

8. The power distribution cabinet according to claim 7, characterized in that: It also includes a first front door panel and a second front door panel. The first front door panel and the second front door panel are both rotatably arranged on a side of the bracket close to the front of the cabinet. The first front door panel is arranged corresponding to the first area, and the second front door panel is arranged corresponding to the second area.

9. The power distribution cabinet according to claim 7, characterized in that: It also includes an operation panel, which is arranged on a side of the bracket close to the front of the cabinet.

10. The power distribution cabinet according to claim 7, characterized in that: It also includes a first back door panel and a second back door panel, wherein the first back door panel and the second back door panel are both arranged on a side of the bracket close to the back of the cabinet, the first back door panel is arranged corresponding to the first area, and the second back door panel is arranged corresponding to the second area.

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